When hydrogen burns in oxygen water is formed when electricity is passed through the what are the reason and oxygen given out name the type of the chemical changes involved in the two cases
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when hydrogen burns in oxygen and water is formed,then it is a combination reaction. when water is electrolysed into hydrogen and oxygen,then it is a decomposition reaction. n a flame of pure hydrogen gas, burning in air, the hydrogen (H2) reacts with oxygen (O2) to form water (H2O) and releases heat.
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