Practice Electrolyte in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A substance that dissociates into free ions when dissolved in a solvent (typically water), producing a solution that can conduct electric current.

Salt dissolved in water breaks into charged particles (ions) that carry electric current.

Showing a random 20 of 50 problems.

Example 1

medium
A 0.30 M solution of Mg(NO3)2Mg(NO_3)_2 fully dissociates. Find the nitrate concentration.

Example 2

easy
Write the dissociation of CaCl2CaCl_2 in water.

Example 3

medium
Rank by conductivity at equal concentration: HClHCl, CH3COOHCH_3COOH, C6H12O6C_6H_{12}O_6 (glucose).

Example 4

medium
Write the ionization equilibrium of the weak acid HFHF in water.

Example 5

hard
A student says that the salt AgClAgCl is a non-electrolyte because AgCl(s)AgCl(s) does not dissolve in water. Identify the misconception.

Example 6

easy
Is acetic acid (CH3COOHCH_3COOH) a strong or weak electrolyte?

Example 7

medium
True or false: a concentrated solution is always a strong electrolyte.

Example 8

hard
A weak acid HAHA is 5.0%5.0\% ionized at 0.10ย M0.10\text{ M}. Predict whether percent ionization rises or falls when diluted to 0.010ย M0.010\text{ M}.

Example 9

easy
Write the dissociation of NaClNaCl in water.

Example 10

medium
Classify NH3NH_3 in water as a strong, weak, or non-electrolyte.

Example 11

medium
Classify each as strong, weak, or non-electrolyte: NaOHNaOH, NH3NH_3, CH3OHCH_3OH (methanol).

Example 12

easy
Is HClHCl in water a strong or weak electrolyte?

Example 13

medium
Is molten (liquid) NaClNaCl an electrolyte even without water?

Example 14

easy
Write the dissociation of KBrKBr in water.

Example 15

easy
Is ethanol (C2H5OHC_2H_5OH) an electrolyte when dissolved in water?

Example 16

medium
A 0.10 M solution of MgCl2MgCl_2 fully dissociates. What is the chloride ion concentration?

Example 17

hard
Compare conductivities at equal 0.10ย M0.10\text{ M}: NaClNaCl, CaCl2CaCl_2, C6H12O6C_6H_{12}O_6 (glucose), CH3COOHCH_3COOH. Rank from highest to lowest.

Example 18

medium
Write the ionization equilibrium of acetic acid in water.

Example 19

easy
Is solid NaClNaCl (not dissolved) an electrolyte solution?

Example 20

easy
True or false: a weak electrolyte conducts no electricity at all.