Question

How would you balance: Ba + H2O --> Ba(OH)2 + H2?

Answer 1

I would balance it stoichiometrically, as you have almost done.

Explanation:

You've got the reaction already.

`Ba(s) + 2H_2O(l) rarr Ba(OH)_2(aq) + H_2(g)uarr`. Barium is sufficiently active to reduce water to give hydrogen gas. Magnesium and calcium metal, other alkaline earths, will display this sort of reactivity.

What is the difference between my equation and yours?