Neco 2022 Chemistry Question 37

Practice objective / multiple choice question 37 from the 2022 Neco Chemistry examination.

Neco 2022 Chemistry Objective / Multiple Choice Medium Difficulty
Question 37 NECO • 2022 • CHEMISTRY • objective

A metal X forms two oxides, XO and \(X_{2}O_{3}\). When 12.0\,g of X reacts with oxygen, 3.4\,g of oxygen combine to give XO, while 5.2\,g of oxygen combine to give \(X_{2}O_{3}\) (the same 12.0\,g of metal is used in each case). Determine the oxidation state of X in each oxide and identify the metal.

Answer Options

Correct Answer A. In XO, X is +2; in X₂O₃, X is +3; the metal is iron (Fe).
B. In XO, X is +2; in X₂O₃, X is +2; the metal is iron (Fe).
C. In XO, X is +3; in X₂O₃, X is +3; the metal is manganese (Mn).
D. In XO, X is +1; in X₂O₃, X is +4; the metal is copper (Cu).
Correct Answer
A
Correct Option:
In XO, X is +2; in X₂O₃, X is +3; the metal is iron (Fe).

About This Question

This is Neco 2022 Chemistry Question 37. It is one of the objective questions from the 2022 Neco Chemistry examination.

Difficulty level: Medium .

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