Question

The equation below is not balanced, and occurs in acidic aqueous solution. When this equation is balanced with the smallest set of whole number coefficients, what is the sum of the coefficients of the products ?

Answer 1

NO3- (aq) + H2S (g) --> NO (g) + S (s)

Answer 2

What method have you learnt to balance redox reactions?

Answer 3

separate into two half reactions

Answer 4

So, start with
H2S --> S

which is the easier one.