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Question

How will you justify that the formation of water from hydrogen and oxygen is a chemical change?

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Solution

Dear student!

The formation of hydrogen is always a chemical change as it follows all the rules for a chemical change to occur.

=> It involves formation of a new compound (H2O)by reaction of two different matters H2 and O2 .

=> The reactants are in gaseous phase and product water is a liquid and the product has different property from the reactants.

=> The water is separated into hydrogen and oxygen gas only by electrolytic processes and not by any physical process.


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