Waec 2022 Chemistry Question 15

Practice objective / multiple choice question 15 from the 2022 Waec Chemistry examination.

Waec 2022 Chemistry Objective / Multiple Choice 2 Difficulty

Question 15 WAEC • 2022 • CHEMISTRY • objective

If 5.0 g of marble reacts with \( 25.0 \mathrm{~cm}^{3} \) hydrochloric acid, which of the following combinations has the fastest reaction rate?

A. Marble chips and 2.0 \( ext{mol} \text{dm}^{-3} \text{HCl} \)

B. Marble chips and mol dm

Correct Answer C. powdered marble and 2.5 mol dm \( ext{HCl}_{\text{(aq)}} \)

D. powdered marble and 2.0 mol dm \text{HCl}_{\text{aq}}

Correct Answer

Correct Option:

powdered marble and 2.5 mol dm \( ext{HCl}_{\text{(aq)}} \)

This is Waec 2022 Chemistry Question 15. It is one of the objective questions from the 2022 Waec Chemistry examination.

Difficulty level: 2 .

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