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R.R. Jha
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1. The Ka for benzoic acid is 6.5 x 10^-5. Calculate the pH

Resolved Question:

1. The Ka for benzoic acid is 6.5 x 10^-5. Calculate the pH of a 0.10 M benzoicacid solution. Benzoic acid is a weak acid?
2. A 0.040 M solution of a monoprotic acid is 14 percent ionized. Calculate
the ionization constant of the acid?
3. What is the pH of a solution containing 0.3 M lactic acid and 0.2 M sodium
lactate ? Lactic acid is a weak acid with a Ka of 1.38 x 10^-4?
4. How does the entropy of a system change for each of the following
processes? (increase or decrease).
(a) A solid melts
(b) A liquid freezes
(c) A liquid boils
(d) A vapor is converted to a solid
(e) A vapor condenses to a liquid
(f) A solid sublimes
(g) Urea dissolves in water
Submitted: 6 years ago.
Category: Homework
Expert:  R.R. Jha replied 6 years ago.
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