Chemistry 7th. Edition by John E. McMurry, Robert C. Fay, Jill Kirsten Robinson | 9780321943170 | 0321943171

Intro to Chemical Engineering

Chemistry

5 SOLVED PROBLEMS

257 SOLVED PROBLEMS

Question: 19.13

calculating the amount of product produced by Electrolysis A constant current of 30.0 A is passed through an aqueous solution of NaCl for 1.00 h. How many grams of NaOH and how many liters of Cl2 gas at STP are produced? ...

Verified Answer:

Because electrons can be thought of as a reactant ...

Question: 6.4

CHEMICAL REACTIONS AND THE OCTET RULE Lithium metal reacts with nitrogen to yield Li3N. What noble-gas configuration does the nitrogen atom in Li3N have? ...

Verified Answer:

The compound

Li_{3}N

contains three...

Question: 11.12

CALCULATING THE OSMOTIC PRESSURE OF A SOLUTION The total concentration of dissolved particles inside red blood cells and in the surrounding plasma is approximately 0.30 M, and the membrane surrounding the cells is semipermeable. What would the maximum osmotic pressure in atmospheres inside the ...

Verified Answer:

\Pi

\left(0.30 \frac{mol}...

Question: 8.5

CALCULATING ΔH IN A CALORIMETRY EXPERIMENT Aqueous silver ion reacts with aqueous chloride ion to yield a white precipitate of solid silver chloride: Ag^+(aq) + Cl^-(aq) → AgCl(s) When 10.0 mL of 1.00 M AgNO3 solution is added to 10.0 mL of 1.00 M NaCl solution at 25.0 °C in a calorimeter, a white ...

Verified Answer:

Specific heat = 4.18 J/(g · °C) Mass = (20.0 mL)[l...

Question: 4.4

calculating the concentration of Ions in a Solution What is the total molar concentration of ions in a 0.350 M solution of the strong electrolyte Na2SO4, assuming complete dissociation? ...

Verified Answer:

Assuming complete dissociation, the total molar co...

Question: 23.3

Draw the condensed structure and line drawing of 3-isopropyl-2-methylhexane. ...

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STRATEGY AND SOLUTION First, look at the parent na...

Question: 14.1

Write the equilibrium constant expression (Kc) for each of the following reactions. For part (b), derive the mathematical relationship to the equilibrium constant in part (a). (a) Synthesis of ammonia: N2(g) + 3 H2(g) ←→ 2NH3(g) (b) Decomposition of ammonia: NH3(g) ←→ 1/2 N2(g) + 3/2 H2(g) (c) ...

Verified Answer:

(a)

K_{c}=\frac{[NH_{3}]^{2}}{[N_{2}][H_{2}...

Question: 20.6

Platinum(II) forms square planar complexes, and platinum(IV) gives octahedral complexes. How many diastereoisomers are possible for each of the following complexes? Draw their structures and identify cis and trans isomers. (a) [Pt(NH3)3Cl]^+ (b) [Pt(NH3)Cl5]^- (c) Pt(NH3)2Cl(NO2) ...

Verified Answer:

(a) No isomers are possible for

[Pt(NH_{3})...

Question: 15.1

Account for the acidic properties of nitrous acid (HNO2) using the Arrhenius theory and the Brønsted–Lowry theory, and identify the conjugate base of HNO2. ...

Verified Answer:

HNO_{2}

is an Arrhenius acid becaus...

Question: 20.8

Give a valence bond description of the bonding in [V(NH3)6]^3+. Include orbital diagrams for the free metal ion and the metal ion in the complex. Tell which hybrid orbitals the metal ion uses and the number of unpaired electrons present. ...

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STRATEGY AND SOLUTION The free

V^{3+}[/late...

Question: 23.4

Determine the condensed formula, molecular formula, and name for the following unsaturated organic compound. ...

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STRATEGY AND SOLUTION Step 1. Determine the carbon...

Question: 23.2

The following condensed structures have the same formula, C8H18. Which of them represent the same molecule and which are isomers? ...

Verified Answer:

Structure (a) has a straight chain of six carbons ...

Question: 17.6

Iron metal is produced commercially by reducing iron(III) oxide in iron ore with carbon monoxide: Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) (a) Calculate the standard free-energy change for this reaction at 25 °C. (b) Is the reaction spontaneous under standard-state conditions at 25 °C? (c) Does the ...

Verified Answer:

(a) The following values of

ΔH°_{f}

...

Question: 16.14

What are the concentrations of Ag^+ , Ag(NH3)^+, and Ag(NH3)2^+ in a solution prepared by adding 0.10 mol of AgNO3 to 1.0 L of 3.0 M NH3? Kf = 1.7 × 10^7, K1 = 2.1 × 10³, and K2 = 8.1 × 10³. ...

Verified Answer:

First determine concentrations assuming 100% conve...

Question: 16.12

Calculate the solubility of MgF2 in water at 25 °C in units of: (a) Moles per liter (b) Grams per liter ...

Verified Answer:

(a) The equilibrium table for the dissolution of [...