A student observes the following reaction on heating copper powder in air: 2Cu + O2 → 2CuO Later, hydrogen gas is passed over black copper oxide and reddish-brown copper is obtained. CuO + H2 → Cu + H2O Which substance is oxidised in the first reaction and reduced in the second reaction?
Subject: General Awareness | Topic: Science | Difficulty: MEDIUM
Options
- (A) Copper oxide in the first reaction and copper in the second reaction
- (B) Hydrogen in the first reaction and copper oxide in the second reaction
- (C) Oxygen in the first reaction and copper oxide in the second reaction
- (D) Copper in the first reaction and copper oxide in the second reaction
Verified Answer
Option (D): Copper in the first reaction and copper oxide in the second reaction
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