NECO SSCE - Chemistry - 2009 (Objective)

Question 1 Report

What volume of carbon (IV) oxide in dm ³ is produced at s.t.p. when 2.50g of CaCO₃ reacts with excess acid according to the following equation? CaCO₃(s) + 2HCI(aq) → CaCl₂(aq) + H₂O(1) + CO₂(g)

[CaCO₂ 100; molar volume of a gas at s.t.p. = 22.4dm ³]

0.28

0.56 Correct answer

2.24

5.6

11.2

Answer Details

Read lesson note on Stoichiometry And Chemical Reactions (WAEC)






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