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When hydrogen burns in oxygen, water is formed and when water is electrolysed, then hydrogen and oxygen are produced. What type of reaction takes place:(a) in the first case?(b) in the second case?
(a) Combination reaction occurs when hydrogen burns in oxygen and water is formed.
$2H_{2} +O_{2} \ \rightarrow 2H_{2} O$
(b) Decomposition reaction occurs when water is electrolysed, hydrogen and oxygen are produced.
$2H_{2} O\rightarrow 2H_{2} +O_{2}$
Updated on: 10-Oct-2022
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