Question

How to write half reaction for H2O(l) -> H2(g)

Answer 1

The charge of H20 Is H = 2(+1) while O (-2).

H2 = 2(0) as it is balanced.

you add +1 electron to the side of H20

Answer 2

H20(l) + 1e -> H2(g)

Answer 3

Then from here im a little confused as how you add H2O to the other side and H^+ on the other...