Question

select the correct answer. which description is true of 0.02 m ca(oh)₂ if ca(oh)₂ completely dissociates in water? a. its a dilute strong acid. b. its a dilute strong base. c. its a dilute weak base. d. its a concentrated weak base. e. its a concentrated weak acid.

Explanation:

Step1: Identify the compound type

$Ca(OH)_2$ is a hydroxide - containing compound and is a base.

Step2: Determine strength

Since $Ca(OH)_2$ completely dissociates in water, it is a strong base.

Step3: Determine concentration

A 0.02 M solution is a relatively low - concentration (dilute) solution. So, 0.02 M $Ca(OH)_2$ is a dilute strong base.

Answer:

B. It's a dilute strong base.