Mass ratio of ${\mathrm{NH}}_3$ and ${\mathrm{CO}}_2$ for maximum product formation as per reaction : $2{\mathrm{NH}}_3+{\mathrm{CO}}_2\to {\mathrm{NHCOONH}}_4$

Mass ratio of ${\mathrm{NH}}_3$ and ${\mathrm{CO}}_2$ for maximum product formation as per reaction is

$\begin{array}{l}2{\mathrm{NH}}_3+{\mathrm{CO}}_2\to {\mathrm{NHCOONH}}_4\\ \frac{n_{{\mathrm{NH}}_3}}{n_{{\mathrm{CO}}_2}}=\frac{2}{1}\\ \Rightarrow \frac{W_{{\mathrm{NH}}_3}}{W_{{\mathrm{CO}}_2}}\times \frac{44}{17}=\frac{2}{1}\\ \Rightarrow \frac{W_{{\mathrm{NH}}_3}}{W_{{\mathrm{CO}}_2}}=\frac{17}{22}\end{array}$