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a) Which type of energy change is occuri...

a) Which type of energy change is occuring in an electrolytic cell?
b) Acidified water is electrolysed. Which of the following reactions takes place at the cathode?
`a) 2H_3 O^+ + 2e^- rarr H_2(g) + 2H_2 O_(1)`
`b) 2H_2 O_(l) rarr O_2(g) + 4H^+_(aq) + 4e^-`

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a) `chemical energy rarr electrical energy`
`b) 2H_3 O^+ + 2e^- rarr H_2 + 2H_2 O ^- `
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