When hydrogen burns in oxygen , water is formed ; when electricity is passed through water , hydrogen and oxygen are given out. Name the chemical changes involved in the two cases.
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Answered by
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In the first, the formation of water is a combination reaction.
2H2+O2===2H2O
The second is a decomposition reaction.
2H2O=====2H2+O2
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2H2+O2===2H2O
The second is a decomposition reaction.
2H2O=====2H2+O2
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this is u r ans:-
Both are chemical changes as they are irreversible and chemical composition gets changed.
The formation of water is a combination reaction.
2 H2 + O2 ---- 2 H2O
The electrolysis of water to give hydrogen and oxygen is a decomposition reaction.
2 H2O ----- 2 H2 + O2
Both are chemical changes as they are irreversible and chemical composition gets changed.
The formation of water is a combination reaction.
2 H2 + O2 ---- 2 H2O
The electrolysis of water to give hydrogen and oxygen is a decomposition reaction.
2 H2O ----- 2 H2 + O2
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