Question

The combustion of ammonia produces NO and water.

If the chemical reaction for this process is properly balanced using the smallest possible integers, what is the sum of the coefficients for the products?

a) 8 b) 10 c) 18 d) 9 e) 12

Answer 1

Answer : The correct option is, (b) 10

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

The balanced chemical reaction will be,

`4NH_3+5O_2\rightarrow 4NO+6H_2O`

This reaction is a balanced chemical reaction because in this reaction number of atoms of individual elements present on reactant side are equal to the product side.

In this reaction,
`NH_3\text{ and }O_2` are the reactants and
`NO\text{ and }H_2O` are the products.

The sum of the coefficients for the products = 4 + 6 = 10

Hence, the correct option is, (b) 10