explain why is electrolysis a reversible process?
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2 H2O -> 2 H2 + O2
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.
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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