Question

When the following equation is balanced with lowest whole-number coefficients, what is the coefficient for NO(g)? ___NH3(g) + ___O2(g) → ___NO(g) + ___H2O(g)

Answer 1

Coefficient in front of the
`NO` in the balanced equation - 4

Step-by-step explanation:

The unbalanced reaction is shown below as:-

`NH_3+O_2\rightarrow NO+H_2O`

On the left hand side,

There are 1 nitrogen atom and 3 hydrogen atoms and 3 oxygen atoms

On the right hand side,

There are 1 nitrogen atom and 2 hydrogen atoms and 2 oxygen atoms

Thus,

Right side,
`H_2O` must be multiplied by 6 and
`NO` by 4

Left side,
`O_2` is multiplied by 5 and
`NH_3` by 4 so to balance the whole reaction.

Thus, the balanced reaction is:-

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

Coefficient in front of the
`NO` in the balanced equation - 4