Balancing Na2O2 + H2O NaOH + O2?

Na2O2 + H2O ---> NaOH + O2

the answer is

2Na2O2 + 2H2O = 4NaOH + O2

So on the left hand side there is:

2 x Na

3 x O

2 x H

On the right side there is:

1 x Na

3 x O

1 x H

Basically, it's guess and check

There is a lack of Na and H on the right side,

So I double NaOH (on the right side),

Na2O2 + H2O = 2NaOH + O2

but then there will be too much O on the right side.

So, I'll double the NaO2 on the left side.

2Na2O2 + H2O = 2NaOH + O2

but then there is too much Na on the left side

so make the NaOH on the left x 4

2Na2O2 + H2O = 4NaOH + O2

but there's too much O and H on the right side, so we double the H2O on the left side

2Na2O2 + 2H2O = 4NaOH + O2

and it's balanced.

it works a lot more simply in your head by guessing and checking than it does written down

Naoh O2

Na2O2 + H2O --- > 2NaOH + O2 No steps necessary. Just make sure that number of molecules on each side are equal. It's a hit and try method.