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Chapter 15: Problem 218

Classify each substance as strong electrolyte, weak electrolyte, or nonelectrolyte: (a) \(\mathrm{CH}_{3} \mathrm{COOH}\) (b) \(\mathrm{KCH}_{3} \mathrm{COO}\) (c) \(\mathrm{H}_{2} \mathrm{SO}_{4}\) (d) \(\mathrm{CH}_{2} \mathrm{Cl}_{2}\) (e) \(\mathrm{NH}_{3}\) (f) \(\mathrm{H}_{3} \mathrm{PO}_{4}\) (g) \(\mathrm{ZnSO}_{4}\)

Short Answer

Expert verified
(a) \(\mathrm{CH}_{3} \mathrm{COOH}\): weak electrolyte (b) \(\mathrm{KCH}_{3} \mathrm{COO}\): strong electrolyte (c) \(\mathrm{H}_{2} \mathrm{SO}_{4}\): strong electrolyte (d) \(\mathrm{CH}_{2} \mathrm{Cl}_{2}\): nonelectrolyte (e) \(\mathrm{NH}_{3}\): weak electrolyte (f) \(\mathrm{H}_{3} \mathrm{PO}_{4}\): weak electrolyte (g) \(\mathrm{ZnSO}_{4}\): strong electrolyte

Step by step solution

01

(a) Classify \(\mathrm{CH}_{3} \mathrm{COOH}\)

This is acetic acid, which is a weak acid. Hence it is a weak electrolyte.
02

(b) Classify \(\mathrm{KCH}_{3} \mathrm{COO}\)

This is potassium acetate, which is a salt of potassium and acetate ions. Soluble salts are strong electrolytes. Hence this is a strong electrolyte.
03

(c) Classify \(\mathrm{H}_{2} \mathrm{SO}_{4}\)

This is sulfuric acid, which is a strong acid. Strong acids are strong electrolytes. Hence this is a strong electrolyte.
04

(d) Classify \(\mathrm{CH}_{2} \mathrm{Cl}_{2}\)

This is Dichloromethane, a compound which does not ionise in water. Hence it is a nonelectrolyte.
05

(e) Classify \(\mathrm{NH}_{3}\)

This is ammonia, which is a weak base. Weak bases are weak electrolytes. Hence, it is a weak electrolyte.
06

(f) Classify \(\mathrm{H}_{3} \mathrm{PO}_{4}\)

This is phosphoric acid, which is a weak acid. Hence, it is a weak electrolyte.
07

(g) Classify \(\mathrm{ZnSO}_{4}\)

This is zinc sulfate, which is a salt and soluble in water. Hence it is a strong electrolyte.

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