Question 8.E.I: A solution contains 63 different conjugate acid-base pairs. ...

Quantitative Chemical Analysis

A solution contains 63 different conjugate acid-base pairs.
Among them is acrylic acid and acrylate ion, with the equilibrium ratio [acrylate]/[acrylic acid] = 0.75. What is the pH of the solution?

$\underset{Acrylic acid}{H_{2}C=CHCO_{2}H }$ $pK_{a}$ = 4.25

The blue check mark means that this solution has been answered and checked by an expert. This guarantees that the final answer is accurate.
Learn more on how we answer questions.

Related Answered Questions

Question: 8.4

Using the Henderson-Hasselbalch Equation. Sodium hypochlorite (NaOCl, the active ingredient of almost all bleaches) was dissolved in a solution buffered to pH 6.20. Find the ratio [OCl^−]/[HOCl] in this solution. ...

Verified Answer:

In Appendix G, we find that

pK_{a}

...

Question: 8.3

A Weak-Base Problem. Find the pH of 0.10 M ammonia. ...

Verified Answer:

When ammonia is dissolved in water, its reaction i...

Question: 8.2

A Weak-Acid Problem. Find the pH of 0.050 M trimethylammonium chloride. ...

Verified Answer:

We assume that ammonium halide salts are completel...

Question: 8.E.J

(a) Find the pH of a solution prepared by dissolving 1.00 g of glycine amide hydrochloride (Table 8-2) plus 1.00 g of glycine amide in 0.100 L. (b) How many grams of glycine amide should be added to 1.00 g of glycine amide hydrochloride to give 100 mL of solution with pH 8.00? (c) What would be the ...

Verified Answer:

(a) pH =

pK_{a} + \log \frac{[B]}{[BH^{+}]...

Question: 8.E.A

Using activity coefficients correctly, find the pH of 1.0 × 10^−2 M NaOH. ...

Verified Answer:

pH =

−\log \mathcal{A}_{H^{+}}

. Bu...

Question: 8.E.B

(Without activities), calculate the pH of (a) 1.0 × 10^−8 M HBr (b) 1.0 × 10^−8 M H2SO4 (H2SO4 dissociates completely to 2H^+ plus SO4^−2 at this low concentration.) ...

Verified Answer:

(a) Charge balance:

[H^{+}] = [OH^{−}] + [B...

Question: 8.E.K

A solution with an ionic strength of 0.10 M containing 0.010 0 M phenylhydrazine has a pH of 8.13. Using activity coefficients correctly, find pKa for the phenylhydrazinium ion found in phenylhydrazine hydrochloride. Assume that gammaBH^+ = 0.80. ...

Verified Answer:

The reaction of phenylhydrazine with water is [lat...

Question: 8.E.L

Use the Goal Seek spreadsheet at the end of the chapter to find the pH of 1.00 L of solution containing 0.030 mol HA (pKa = 2.50) and 0.015 mol NaA. What would the pH be with the approximations [HA] = 0.030 and [A^−] = 0.015? ...

Verified Answer:

We use Goal Seek to vary cell B5 until cell D4 is ...

Question: 8.E.H

Which of the following bases would be most suitable for preparing a buffer of pH 9.00? (i) NH3 (ammonia, Kb = 1.76 × 10^−5); (ii) C6H5NH2 (aniline, Kb = 3.99 × 10^−10); ; (iii) H2NNH2 (hydrazine, Kb = 1.05 × 10^−6); (iv) C5H5N (pyridine, Kb = 1.58 × 10^−9) ...

Verified Answer:

Compound

pK_{a}

(for conjugate acid...

Question: 8.E.G

The pH of 0.10 M ethylamine is 11.82. (a) Without referring to Appendix G, find Kb for ethylamine. (b) Using results from part (a), calculate the pH of 0.10 M ethylammonium chloride. ...

Verified Answer:

(a)

\underset{F - x}{CH_{3}CH_{2}NH_{2}}...