'Electrolysis' of water is a chemical and reversible change justify it.
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Explanation:
Liquid water is being sliced off into H2 and O2 gas. If water was just boiled and became vapor, it would be physical change, however, it became two different elements. Therefore, it's chemical change.
If pressure and temperature is enough, reverse reaction can always occur to form water again. That's actually the behind mechanism of hydrogen gas fuel. Liquid H2 gas burns with O2 gas to produce water.
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Justification for 'Electrolysis' of water is a chemical and reversible change:
- Electrolysis of water is a chemical process as it involves the conversion of water to 'hydrogen and oxygen'.
- At the same condition again we cannot change them to water.
- There is a chemical bond 'breaking' and 'formation' of different bonds happen. That is why it's considered as a chemical change.
- A reversible change is defined as the final product can be converted back to the original initial product.
- The examples of reversible change is melting, boiling, freezing.
Learn more about Electrolysis'
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