Neco Model Questions Vol1 2023 Chemistry Question 48

Practice objective / multiple choice question 48 from the 2023 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2023 Chemistry Objective / Multiple Choice Medium Difficulty
Question 48 NECO_MODEL_QUESTIONS_VOL1 • 2023 • CHEMISTRY • objective

A \(2.00\ \text{g}\) sample of a mixture containing calcium carbonate (\(\text{CaCO}_3\)) and magnesium carbonate (\(\text{MgCO}_3\)) is treated with excess hydrochloric acid. The total volume of carbon dioxide gas evolved at \(25^{\circ}\text{C}\) and \(1.00\ \text{atm}\) is measured to be \(0.560\ \text{L}\). Assuming complete reaction of both carbonates, determine the mass percent of \(\text{CaCO}_3\) in the original mixture.

Answer Options

Correct Answer A. 22.5 % (approximately)
B. 18.0 % (approximately)
C. 30.0 % (approximately)
D. 25.0 % (approximately)
Correct Answer
A
Correct Option:
22.5 % (approximately)

About This Question

This is Neco Model Questions Vol1 2023 Chemistry Question 48. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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