Question
We know that the relationship between $${K_c}$$ and $${K_p}$$ is $${K_p} = {K_c}{\left( {RT} \right)^{\Delta n}}$$
What would be the value of $${\Delta n}$$ for the reaction : $$N{H_4}C{l_{\left( s \right)}} \rightleftharpoons N{H_{3\left( g \right)}} + HC{l_{\left( g \right)}}?$$
A.
1
B.
0.5
C.
1.5
D.
2
Answer :
2
Solution :
For the reaction : $$N{H_4}C{l_{\left( s \right)}} \rightleftharpoons N{H_{3\left( g \right)}} + HC{l_{\left( g \right)}}$$
$$\eqalign{
& \Delta n = {n_{\left( {{\text{gaseous products}}} \right)}} - {n_{\left( {{\text{gaseous reactants}}} \right)}} \cr
& \,\,\,\,\,\,\,\,\, = 2 - 0 \cr
& \,\,\,\,\,\,\,\,\, = 2 \cr} $$