Waec 2021 Chemistry Question 30

Practice objective / multiple choice question 30 from the 2021 Waec Chemistry examination. This question covers Chemistry, Solubility .

Waec 2021 Chemistry Objective / Multiple Choice 2 Difficulty

Topics: Chemistry Solubility

Question 30 WAEC • 2021 • CHEMISTRY • objective

At 25 °C, evaporation of a \( 100 \mathrm{~cm}^{3} \) solution of \( \mathrm{K}_{2} \mathrm{CO}_{3} \) to dryness gave 14 g of the salt. What is the solubility of \( \mathrm{K}_{2} \mathrm{CO}_{3} \) at 2 °C? \( [\mathrm{K}_{2} \mathrm{CO}_{3}=138] \)

A. 1.01 mol dm \( { }^{-3} \)

Correct Answer B. 5.0 mol dm \( { }^{-3} \)

C. 10.0 mol dm \( { }^{3} \)

Correct Answer

Correct Option:

5.0 mol dm \( { }^{-3} \)

This is Waec 2021 Chemistry Question 30. It is one of the objective questions from the 2021 Waec Chemistry examination.

The question covers Chemistry, Solubility .

Difficulty level: 2 .

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