# How do you balance the following equation: Ag + H_2S → Ag_2S + H_2?

Apr 22, 2018

Put a coefficient of $2$ in the first $A g$.

#### Explanation:

$A g \left(s\right) + {H}_{2} S \left(a q\right) \to A {g}_{2} S \left(a q\right) + {H}_{2} \left(g\right) \uparrow$
From here, I see that everything is balanced, except that there are two silver atoms on the right side, but only one on the left side, so we multiply $A g$ on the left by $2$ to get the balanced equation:
$2 A g \left(s\right) + {H}_{2} S \left(a q\right) \to A {g}_{2} S \left(a q\right) + {H}_{2} \left(g\right) \uparrow$