What happens when copper oxide is heated in t | vedclass

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Question

(A) When copper oxide $(CuO)$ is heated in the presence of dihydrogen gas $(H_2)$, a redox reaction occurs.In this reaction, $CuO$ loses oxygen to for

Vedclass · Accepted Answer

Reduction occurs and copper metal is obtained.

Vedclass · Answer

(A) When copper oxide $(CuO)$ is heated in the presence of dihydrogen gas $(H_2)$, a redox reaction occurs.In this reaction, $CuO$ loses oxygen to form copper metal $(Cu)$, which is a reduction process.Simultaneously, $H_2$ gains oxygen to form water $(H_2O)$, which is an oxidation process.The chemical equation for this reaction is: $CuO(s) + H_2(g) \xrightarrow{\Delta} Cu(s) + H_2O(g)$.Thus, copper metal is obtained as a product.

$X$	$Y$
$1.$ Dehydrating agent	$p.$ Sulphur dioxide gas
$2.$ In preparation of firecrackers	$q.$ Concentrated sulphuric acid
$3.$ Weak bleaching agent	$r.$ Dihydrogen gas
$4.$ Lightest gas	$s.$ Sulphur

What happens when copper oxide is heated in the presence of dihydrogen gas?

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Which metal does not react with cold or hot water,but reacts with steam to produce $H_2$ gas?

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$X$ $Y$
$1.$ Dehydrating agent $p.$ Sulphur dioxide gas
$2.$ In preparation of firecrackers $q.$ Concentrated sulphuric acid
$3.$ Weak bleaching agent $r.$ Dihydrogen gas
$4.$ Lightest gas $s.$ Sulphur

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