why chemical change can't normaly rewarsed
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It is possible to form water byburning hydrogen in oxygen. You can pass an electric current through the water and split it into hydrogen and oxygen. Most chemists would not call this a reversible reaction.
muzine:
Because in a chemical change breaking of old bonds and formation of new bonds takes place. So, it needs a high energy to get the old substance back. Hence, a chemical change can't be reversed easily but we can't say that a chemical change is irreversible.
i think it might be the answer
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Because in a chemical substance, a new substance is formed, which we cannot obtained in its original form
So, it is non reversible.
So, it is non reversible.
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