Neco 2022 Chemistry Question 2

Practice objective / multiple choice question 2 from the 2022 Neco Chemistry examination.

Neco 2022 Chemistry Objective / Multiple Choice Hard Difficulty
Question 2 NECO • 2022 • CHEMISTRY • objective

A solid oxide of a non‑metal contains 52.14% sulfur by mass. Determine (i) its empirical formula, (ii) the oxidation state of sulfur in the oxide, and (iii) the formula of the acid formed when the oxide reacts with water.

Answer Options

A. Empirical formula SO; oxidation state of S = +2; acid formed is H₂SO₂ (sulfurous acid).
Correct Answer B. Empirical formula SO₂; oxidation state of S = +4; acid formed is H₂SO₃ (sulfurous acid).
C. Empirical formula S₂O₅; oxidation state of S = +5; acid formed is H₂S₂O₅ (disulfurous acid).
D. Empirical formula SO₃; oxidation state of S = +6; acid formed is H₂SO₄ (sulfuric acid).
Correct Answer
B
Correct Option:
Empirical formula SO₂; oxidation state of S = +4; acid formed is H₂SO₃ (sulfurous acid).

About This Question

This is Neco 2022 Chemistry Question 2. It is one of the objective questions from the 2022 Neco Chemistry examination.

Difficulty level: Hard .

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