Question

When the equation H2S + HNO3 → S + NO + H2O is balanced, what is the coefficient for H2O?
Question options:

4

6

3(incorrect)

2

Answer 1

 The  coefficient  for H2O  is  4

Explanation

Coefficient  is thew number  in front  of the formula in a  balanced chemical  equation.

The  balanced  equation as below

3H₂S  + 2HNO₃   →   3S  + 2 NO +4H₂O

The number in front of  H₂O  is  4  therefore   4  is the  coefficient for H₂O

Answer 2

Answer : The correct option is, 4

Explanation :

Balanced chemical reaction : In the balanced chemical reaction the number of individual atoms present of reactant side must be equal to the product side.

The given balanced reaction will be,

$3H_2S+2HNO_3\rightarrow 3S+2NO+4H_2O$

By stoichiometry we can say that, 3 moles of hydrogen sulfide react with 2 moles of nitric acid to give 3 moles of sulfur, 2 moles of nitrogen oxide and 4 moles of water as products.

The coefficient for $H_2O$ is, 4

Therefore, the correct option is, 4