Using heat capacity data from Table A.8 of Appendix A and assuming the heat capacities to be independent of temperature, find the standard-state enthalpy change at 373.15K for the reaction of Eq. (2.7-6).

Question

Using heat capacity data from Table A.8 of Appendix A and assuming the heat capacities to be independent of temperature, find the standard-state enthalpy change at 373.15K for the reaction of [latex] Eq. (2.7-6): 0=2NO_{2}(g)-N_{2}O_{4}(g). [/latex]

Table A.8 Values of Thermodynamic Functions
Quantities
T	[latex]C^{°}_{V,m}[/latex]	[latex]S^{°}_{m}[/latex]	[latex]-\frac{G^{°}_{m}-H^{°}_{m,298}}{T}[/latex]	[latex]H^{°}_{m}-H^{°}_{m,298}[/latex]	[latex]\Delta _{f}H^{°}[/latex]	[latex]\Delta _{f}G^{°}[/latex]
Units
K	[latex]JK^{-1}mol^{-1}[/latex]	[latex]JK^{-1}mol^{-1}[/latex]	[latex]JK^{-1}mol^{-1}[/latex]	[latex]kJmol^{-1}[/latex]	[latex]kJmol^{-1}[/latex]	[latex]kJmol^{-1}[/latex]
			Ag(cr)
0				−5.745
298	25.351	42.55	-	0	0	0
			[latex]Ag^{+}(ao)[/latex]
298	21.8	72.78			105.579	77.107
			AgBr(cr)
298	52.38	107.1			−100.37	−96.90
			AgCl(cr)
298	50.79	96.2			−127.068	−109.78
			AgI(cr)
298	56.82	115.5			−61.84	−66.19
			[latex]Ag_{2}S(cr, α, orthorhombic)[/latex]
0					−33.999
298	76.53	144.01			−32.59	−40.67
			[latex]Ag_{2}S(cr, β)[/latex]
298		150.6			−29.41	−39.46
			Ar(g)
0	0	0		−6.197	0	0
298	20.786	154.845	154.845	0	0	0
500	20.786	165.591	157.200	4.196	0	0
1000	20.786	179.999	165.410	14.589	0	0
2000	20.786	194.407	176.719	35.375
			Br(g)
0						117.942
298	20.786	175.022		6.197	111.884	82.396
500	20.798	185.765	177.372	4.196	96.900	70.100
1000	21.365	200.301	185.603	14.698	98.028	42.873
			[latex]Br^{−}(ao)[/latex]
298	−141.8	82.4			−121.55	−103.96
			[latex]Br_{2}(g)[/latex]
0	0	0		−9.722	45.702	45.697
298	36.048	245.394	245.394	0	30.910	3.126
500	37.077	264.329	249.526	7.402	0	0
1000	37.787	290.293	264.143	26.150	0	0
2000	38.945	316.785	283.569	64.432	0	0
			[latex]Br_{2}(l)[/latex]
298	75.674	152.206	152.206	0	0	0
500	75.302	191.150			−23.208	13.481
			C(cr, graphite)
0	0	0		-1.051	0	0
298	.517	5.740	5.740	0	0	0
500	14.623	11.662	6.932	2.365	0	0
1000	21.610	24.457	12.662	11.795	0	0
2000	25.094	40.771	23.008	35.525	0	0
			C(cr, diamond)
0				−0.523	2.423
298	6.113	2.377		0	1.895	2.900
			C(g)
0	0	0		−6.536	711.185	711.185
298	20.838	158.100	158.100	0	716.170	671.244
500	20.804	168.863	160.459	4.202	718.507	639.906
1000	20.791	183.278	168.678	14.600	719.475	560.654
2000	20.952	197.713	179.996	35.433	716.577	402.694
			[latex]CH_{4}(g)[/latex]
0	0	0		−10.024	−66.911	−66.911
298	35.639	186.251	186.251	0	−74.873	−50.768
500	46.342	207.014	190.614	8.200	−80.802	−32.741
1000	71.795	247.549	209.370	38.179	−89.849	19.492
2000	94.399	305.853	244.057	123.592	−92.709	130.802
			CO(g)
0	0	0		−8.671	-113.805	-113.805
298	29.142	197.653	197.653	0	−110.527	-137.163
500	29.794	212.831	200.968	5.931	−110.003	−155.414
1000	33.183	234.538	212.848	21.690	−111.983	−200.275
2000	36.250	258.714	230.342	56.744	−118.896	−286.034
			CO(ao)
298		104.6			−120.96	−119.90
			[latex]CO_{2}(g)[/latex]
0	0	0		−9.364	−393.151	−393.151
298	37.129	213.795	213.795	0	-394.389	-394.389
500	44.627	234.901	281.290	8.054	−393.676	−394.939
1000	54.308	269.299	235.901	33.397	−394.623	−395.886
2000	60.350	309.293	263.574	91.439	−396.784	−396.333
			[latex]CO_{2}(ao)[/latex]
298		117.6			−413.80	−385.98
			[latex]CH_{3}OH(g)[/latex]
298	43.89	289.81		0	−201.17	−162.46
			[latex]C_{2}H_{2}(g)[/latex]
0	0	0		−10.012	235.755	235.755
298	44.095	200.958	200.958	0	226.731	248.163
500	54.869	226.610	206.393	10.108	220.345	264.439
1000	68.275	269.192	227.984	41.208	202.989	315.144
2000	81.605	321.335	262.733	117.203	166.980	441.068
			[latex]C_{2}H_{4}(g)[/latex]
0	0	0		−10.518	60.986	60.986
298	42.886	219.330	219.330	0	52.467	68.421
500	62.477	246.215	224.879	10.668	46.641	80.933
1000	93.899	300.408	249.742	50.665	38.183	119.122
2000	118.386	374.791	295.101	159.381	34.894	202.070
			[latex]C_{2}H_{6}(g)[/latex]
0				−11.950	−69.132
298	52.63	229.60		0	−84.68	−32.82
			[latex]Ethanol, C_{2}H_{5}OH(l)[/latex]
298	111.46	160.7			−277.69	−174.78
			[latex]Ethanol, C_{2}H_{5}OH(ao)[/latex]
298		148.5			-288.3	-181.64
			[latex]Acetic acid, CH_{3}CO_{2}H(l)[/latex]
298	124.3	282.5			-484.5	-389.9
			[latex]Acetic acid, CH_{3}CO_{2}H(ai)[/latex]
298	-6.3	86.6			-486.01	-396.31
			[latex]Acetic acid, CH_{3}CO_{2}H(ao)[/latex]
298		178.7			−485.76	−396.46
			[latex]Acetate ion, CH^{3}CO_{2}^{−}(ao)[/latex]
298	−6.3	86.6		0	−486.01	−369.31
			[latex]Propane, C_{3}H_{8}(g)[/latex]
298	73.51	270.02			−103.85	−23.27
			[latex]n-Butane, C_{4}H_{10}(g)[/latex]
298	97.45	310.23		0	−201.17	−162.46
			[latex]Benzene, C_{6}H_{6}(g)[/latex]
298	81.67	269.31		0	82.93	129.73
			[latex]Benzene, C_{6}H_{6}(l)[/latex]
298	135.31	172.8			49.028	124.50
			[latex]Benzoic acid, C_{6}H_{5}COOH(cr)[/latex]
298	146.8	167.6		0	−385.1	−245.3
			[latex]Cyclohexane, C_{6}H_{12}(g)[/latex]
298	106.3	298.2			−123.1	31.8
			[latex]Cyclohexane, C_{6}H_{12}(l)[/latex]
298	156	204.4			−156.2	26.7
			[latex]Octane, C_{8}H_{18}(l)[/latex]
298		361.1			−249.9	6.4
			[latex]Iso-octane (2,2,4-trimethyl pentane), C_{8}H_{18}(g)[/latex]
298		423.2			−224.1	13.7
			[latex]Iso-octane (2,2,4-trimethyl pentane), C_{8}H_{18}(l)[/latex]
298		328.0			−255.1	6.90
			Ca(cr)
298	25.951	43.070	43.070	0	1.056	0.61
			[latex]Ca^{2+}(ao)[/latex]
298		−53.1			−542.83	−553.58
			[latex]CaCl_{2}(cr)[/latex]
298		72.59	104.6		−795.8	−748.1
			[latex]Calcite, CaCO_{3}(cr)[/latex]
298	81.88	92.9			−1206.92	−1128.79
			[latex]Aragonite, CaCO_{3}(cr)[/latex]
298	81.25	88.7			−1207.13	−1127.75
			CaO(cr)
298	42.120	38.212	38.212	0	-635.089	−603.501
500	48.982	61.980	43.305	9.338	−634.242	−582.316
1000	53.735	97.700	62.463	35.237	−634.273	−530.677
			Cl(g)
0	0	0		−6.272	119.621	119.621
298	21.838	165.189	165.189	0	121.302	105.306
500	22.744	176.752	167.708	4.522	122.272	94.203
1000	22.233	192.430	176.615	15.815	124.334	65.288
2000	21.341	207.505	188.749	37.512	127.058	5.081
			[latex]Cl^{-}(g)[/latex]
298	22.958	167.5567	167.556	0	1378.801	1355.845
500	23.706	179.700	170.205	4.748	1384.192	1338
			[latex]Cl_{2}(g)[/latex]
0	0	0		−9.181	0	0
298	33.949	223.079	223.079	0	0	0
500	36.064	241.228	227.020	7.104	0	0
1000	37.438	266.767	241.203	25.565	0	0
2000	38.428	293.033	261.277	63.512	0	0
			[latex]Cl^{-}(ao)[/latex]
298	−136.4	56.5			−167.159	−131.228
			Cu(cr)
298	24.435	33.150			0	0
			[latex]Cu^{2+}(ao)[/latex]
298		-99.6			64.77	65.49
			CuO(cr)
298	42.246	42.594	42.594		−156.063	−128.292
			[latex]Cu_{2}O(cr)[/latex]
298	35.693	234.617	234.617	0	306.269	276.788
			F(g)
0	0	0		-6.518	77.284	77.284
298	22.746	158.750	158.750	0	79.390	62.289
500	22.100	170.363	161.307	4.528	80.597	50.350
1000	21.266	185.362	170.038	15.324	82.403	19.317
2000	20.925	199.963	181.778	36.369	84.387	−44.635
			[latex]F_{2}(g)[/latex]
0	0	0		-8.825	0	0
298	31.302	202.789	202.789	0	0	0
500	34.255	219.738	206.452	6.743	0	0
1000	37.057	244.552	219.930	24.622	0	0
2000	38.846	270.904	239.531	62.745	0	0
			Fe(cr)
0				-4.489
298	25.10	27.28		0	0	0
			[latex]Fe^{2+}(ao)[/latex]
298		−137.7			−89.1	−78.90
			[latex]Fe^{3+}(ao)[/latex]
298		−315.9			−48.5	−4.7
			[latex]Fe(OH)_{3}(s)[/latex]
298		106.7			−823.0	−696.5
			[latex]Fe(OH)_{3}(ao)[/latex]
298						−659.3
			[latex]H_{2}(g)[/latex]
0	0	0		−8.467	0	0
298	28.836	130.680	130.680	0	0	0
500	29.260	145.737	133.973	5.882	0	0
1000	30.205	166.216	145.536	20.680	0	0
2000	34.280	188.418	161.943	52.951	0	0
			H(g)
0	0	0		−6.197	216.35	216.035
298	20.786	114.713		0	217.965	203.247
500	20.786	125.463		5.928	219.254	192.957
			[latex]H^{+}(ao)[/latex]
298	0	0			0	0
			[latex]H_{2}CO_{3}(ao)[/latex]
298		187.4			−699.65	−623.08
			HBr(g)
0	0	0		−8.648	−28.560	−28.560
298	29.142	198.695		0	−36.40	−53.45
500	29.453	213.812	202.006	5.903	−52.636	−57.026
1000	32.319	235.032		21.294	−54.018	−60.796
2000	36.109	258.824		55.838	−54.751	−67.196
			HCl(g)
0	0	0		−8.640	−92.127	−92.127
298	29.136	186.901	186.901	0	−92.312	−95.300
500	29.304	201.898	190.205	5.892	−92.912	−97.166
1000	31.628	222.903	201.857	21.046	−94.388	−100.799
2000	35.600	246.246	218.769	54.953	−95.590	−106.631
			HF(g)
298	29.138	173.78	173.780	0	−272.546	−274.646
			HI(g)
0		0	0	−8.656	28.535	28.535
298	29.156	206.589	206.589	0	26.359	1.560
500	29.736	221.760	209.905	5.928	−5.622	−10.088
1000	33.135	243.404	221.763	21.641	−6.754	−14.006
2000	36.623	267.680	239.248	56.863	−7.589	−21.009
			[latex]HNO_{3}(g)[/latex]
0				−11.778	−125.27
298	53.35	266.38		0	−135.06	−74.72
			[latex]HNO_{3}(ai)[/latex]
298	−86.6	146.4		0	−207.36	−111.25
			[latex]H_{2}O(g)[/latex]
0	0	0		−9.904	−238.921	−238.921
298	33.590	188.834	188.834	0	−241.826	−228.582
500	35.226	206.534	192.685	6.925	−243.826	−219.051
1000	41.268	232.738	206.738	26.000	−247.857	−192.590
2000	51.180	264.769	228.374	72.790	−251.575	−135.528
			[latex]H_{2}O(l)[/latex]
298	75.351	69.950	69.950	0	−285.830	−237.141
500	83.694	109.898	78.579	15.659	−279.095	−206.002
			[latex]H_{2}S(g)[/latex]
298	34.192	205.757	205.757	0	−20.502	−33.329
500	37.192	224.102	209.726	7.188	−27.762	−40.179
1000	45.786	252.579	224.599	27.980	−90.024	−20.984
			[latex]H_{2}SO_{4}(l)[/latex]
298	83.761	298.796	298.796	0	−735.129	−653.366
			[latex]H_{2}SO_{4}(ai)[/latex]
298	−293	20.1		0	−909.27	−744.53
			He(g)
0	0	0		−6.197	0	0
298	20.786	126.152	126.152	0	0	0
500	20.786	136.899	128.507	4.196	0	0
1000	20.786	151.306	136.718	14.589	0	0
2000	20.786	165.714	148.027	35.375	0	0
			Hg(l)
298	27.978	76.028	0	0	0	0
			Hg(g)
298	20.786	174.970	174.970	0	61.380	31.880
			[latex]Hg^{2+}_{2}(ao)[/latex]
298		84.5			172.4	153.52
			[latex]Hg^{2+}(ao)[/latex]
298		−32.2			171.1	164.4
			[latex]Hg_{2}Cl_{2}(cr)[/latex]
298	101.968	192.535	192.535	0	−264.927	−210.485
			[latex]HgCl_{2}(cr)[/latex]
298	73.906	144.494	144.494	0	−230.120	-184.022
			HgO(cr, red, orthorhombic)
298	44.06	70.29			−90.83	−58.539
			HgS(cr, red)
298	48.41	82.4			−58.2	−50.6
			HgS(cr,black)
298		88.3			−53.6	−47.7
			[latex]I_{2}(cr)[/latex]
298	54.436	116.142	116.142	0	0	0
			[latex]I_{2}(g)[/latex]
298	36.887	260.685	260.685	0	62.421	19.325
			I(g)
0				−6.197	107.240
298	20.786	180.791		0	106.838	70.250
			[latex]I^{-}(ao)[/latex]
298	−142.3	111.3			−55.19	−51.57
			[latex]K^{+}(ao)[/latex]
298	21.8	102.5			−252.38	−283.27
			KOH(cr)
298	64.9	78.9		12.150	−424.764	−379.08
			[latex]Li^{+}(ao)[/latex]
298	68.6	13.4			−278.49	−293.31
			Mg(cr)
0				−5.000
298	24.89	32.68		0	0	0
			MgO(cr, macrocrystal)
0				−5.167	−597.530
298	37.15	26.74		0	−601.70	−569.43
			[latex]N_{2}(g)[/latex]
0	0	0		−8.670	0	0
298	29.124	191.609	191.609	0	0	0
500	29.580	206.739	194.917	5.911	0	0
1000	32.697	228.170	206.708	21.463	0	0
2000	35.971	252.074	224.006	56.137	0	0
			[latex]NH_{3}(g)[/latex]
0	0	0		−10.045	−38.907	−38.907
298	35.652	192.774	192.774	0	−45.898	−16.367
500	42.048	212.659	197.021	7.819	−49.857	4.800
1000	56.491	246.486	213.849	32.637	−55.013	61.910
2000	72.833	291.525	242.244	98.561	−54.833	179.447
			[latex]NH_{3}(ao)[/latex]
298		111.3			−80.29	−26.50
			[latex]NH_{4}^{+}(ao)[/latex]
298	79.9	113.4			-132.51	-79.31
			NO(g)
298	29.845	210.758	210.758	0	90.291	86.600
			[latex]NO_{2}(g)[/latex]
298	36.874	240.034	240.034	0	33.095	51.258
			[latex]N_{2}O_{4}(g)[/latex]
0	0	0		−16.398	18.718	18.718
298	77.256	305.376	304.376	0	9.079	97.787
500	97.204	349.446	313.907	17.769	8.769	158.109
1000	119.208	425.106	352.127	72.978	15.189	305.410
2000	129.03	511.743	412.484	198.518	33.110	588.764
			[latex]N_{2}O(g)[/latex]
298	38.617	219.957	219.957	0	82.048	104.179
			[latex]No_{3}^{-}(ao)[/latex]
298	−86.6	146.4			−205.0	−108.74
			[latex]N_{2}O_{5}(g)[/latex]
298	96.303	346.548	346.548	0	11.297	118.013
			NOCl(g)
0				−11.364	53.60
298	44.69	261.69			51.71	66.08
			[latex]Na^{+}(ao)[/latex]
298	46.4	59.0			−240.12	−261.905
			NaOH(cr)
0	0	0		−10.487	−421.396	−421.396
298	59.530	64.445	64.445	0	−425.931	−379.741
500	75.157	98.172	71.595	13.288	−427.401	−347.767
			Ne(g)
0	0	0		−6.197	0	0
298	20.786	146.327	146.327	0	0	0
500	20.786	157.074	148.683	4.196	0	0
1000	20.786	171.482	156.893	14.589	0	0
2000	20.786	185.889	168.202	35.375	0	0
			O(g)
0	0	0		−6.725	246.790	246.790
298	21.911	161.058	161.058	0	249.173	231.736
500	21.257	172.197	163.511	4.343	250.474	219.549
1000	20.915	186.790	171.930	14.860	252.682	187.681
2000	20.826	201.247	183.391	35.713	255.299	121.552
			[latex]O_{2}(g)[/latex]
0	0	0		−8.683	0	0
298	29.376	205.147	205.147	0	0	0
500	31.091	220.693	208.524	6.084	0	0
1000	34.870	243.578	220.875	22.703	0	0
2000	37.741	268.748	239.160	59.175	0	0
			[latex]O_{3}(g)[/latex]
0	0	0		−10.351	145.348	145.348
298	39.238	238.932	238.932	0	142.674	163.184
500	47.262	261.272	243.688	8.792	142.340	177.224
1000	55.024	297.048	262.228	34.819	143.439	211.759
2000	58.250	336.469	290.533	91.873	145.784	279.089
			[latex]OH^{-}(ao)[/latex]
298	−148.5	−10.75			−229.994	−157.244
			P(cr, white)
298	23.840	41.09		5.360	0	0
			P(cr, red, triclinic)
298	21.21	22.80		3.607	−17.6	−12.1
			P(cr, black)
298					−39.3
			P(am, red)
298					−7.5
			[latex]PCl_{3}(g)[/latex]
0	0	0		−15.932	−285.497	−285.497
298	71.581	311.682	311.682	0	−288.696	−269.610
500	78.370	350.656	320.107	15.274	−290.007	−256.102
1000	81.867	406.435	350.828	55.607	−290.528	−221.943
2000	82.819	463.583	394.530	138.107	−348.754	−110.631
			[latex]PCl_{5}(g)[/latex]
0	0	0		−22.852	−354.723	−354.723
298	111.890	364.288	364.288	0	−360.184	−290.271
500	124.332	425.745	377.544	24.100	−359.722	−242.799
1000	130.705	514.582	426.223	88.359	−354.829	−127.623
2000	132.439	605.912	495.804	220.215	−401.646	137.886
			Pb(cr)
0				−6.878
298	26.44	64.81		0	0	0
			[latex]Pb^{2+}(ao)[/latex]
298		10.5			−1.7	−24.43
			[latex]PbO_{2}(cr)[/latex]
298	64.64	68.6			−277.4	−217.33
			PbS(cr)
298	49.50	91.2			−100.4	−98.7
			[latex]PbSO_{4}(cr)[/latex]
0				−20.062
298	103.207	148.57		0	−919.94	−813.14
			Pt(cr)
0				−5.740
298	25.86	41.63		0	0	0
			S(cr, rhombic)
0				−4.410
298	22.64	31.80		0	0	0
			S(cr, monoclinic)
298					0.33	0.096
			[latex]S^{2-}(ao)[/latex]
298		−14.6			33.1	85.8
			[latex]SO_{2}(g)[/latex]
0	0	0		−10.552	−294.299	−294.299
298	39.878	248.212	248.212	0	−296.842	−300.125
500	46.576	270.495	252.979	8.758	−302.736	−300.871
1000	54.484	305.767	271.339	34.428	−361.940	−288.725
2000	58.229	345.007	299.383	91.250	−360.981	−215.929
			[latex]SO_{3}(g)[/latex]
0	0	0	−11.697	−390.025	−390.025
298	50.661	256.769	256.769	0	−395.765	−371.016
500	63.100	286.152	262.992	11.580	−401.878	−352.668
1000	75.968	334.828	287.768	47.060	−459.581	−293.639
2000	81.140	389.616	326.421	126.390	−454.351	−129.768
			[latex]SO_{4}^{2-}(ao)[/latex]
298	−293	20.1			−909.27	−744.53
			[latex]Sn^{2+}(ao)[/latex]
			[latex](μ(NaClO_{4}) = 3.0)[/latex]
298		-17			-8.8	-27.2
			[latex]Sn^{4+}(ao)[/latex]
			[latex](in HCl+H_{2}O)[/latex]
298		−117			30.5	2.5
			Zn(cr)
0				−5.669
298	25.287	41.717		0	0	0
			[latex]Zn^{2+}(ao)[/latex]
298	46	-112.1			−153.89	−147.06
			ZnO(cr)
298	40.25	43.64			−348.28	−318.30
			sphalerite, ZnS(cr)
298	46.0	57.7			−205.98	−201.29
			wurtzite, ZnS(cr)
298					−192.63
FA1:G433rom M.W. Chase, Jr., C. A. Davies, J. R. Downey, Jr., D. J. Frurip, R. A. McDonald, and A. N. Syverud, JANAF Thermochemical Tables, 3rd ed., J. Phys. Chem. Ref. Data, Vol. 14, 1985, Supplement No. 1, published by the American Chemical Society and the American Institute of Physics for the National Bureau of Standards; D. D.Wagman,W. H. Evans, V. B. Parker, R. H. Schymm, I. Halow, S. M. Bailer, K. L. Churney, and R. L Nuttall, The NBS Tables of Chemical Thermodynamic Properties—Selected Values for Inorganic and [latex] C_{1} and C_{2} [/latex] Organic Substances in SI Units, J. Phys. Chem. Ref. Data., Vol. 11, 1982, Supplement No. 2, published by the American Chemical Society and the American Institute of Physics for the National Bureau of Standards. In the case of small discrepancies between Chase et al., andWagman et al., the values from Chase et al., have been taken. Values for organic substances with more than two carbons are from D. R. Stull, E. F.Westrum, and G. C. Sinke, The Chemical Thermodynamics of Organic Compounds, Wiley, New York, 1969, or from M. Kh. Karapet’yants and M. L. Karapet’yants, Thermodynamic Constants of Inorganic and Organic Compounds, Humphrey Science Publishers, Ann Arbor, MI, 1970. Abbreviations: cr=crystal; l=liquid; g=gas; ao=aqueous, molality standard state without (further) ionization; ai=aqueous, molality standard state with ionization; am=amorphous.

Accepted Answer

[latex]ΔC^{°}_{P}=2C^{°}_{P,m } (NO_{2}) + (−1)C^{°}_{P,m }(N_{2}O_{4})[/latex]

[latex]=2(36.874JK^{−1} mol^{−1}) + (−1) (77.256JK^{−1} mol^{−1})[/latex]

[latex] =−3.508JK^{−1} mol^{−1} =−0.003508 kJK^{−1} mol^{−1}[/latex]

Using the value of [latex]ΔH^{°}(298.15K) [/latex] from the previous example,

[latex]ΔH^{°}(298.15K)=57.11 kJ mol^{−1} +\Bigl(0.003508 kJK^{−1} mol^{−1}\Bigr)(75.00 K)[/latex]

[latex]=57.11 kJ mol^{−1} − 0.263 kJ mol^{−1} =56.85 kJ mol^{−1}[/latex]

Question 2.31: Using heat capacity data from Table A.8 of Appendix A and as...

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