Question
$${P_4}{O_{10}}$$ is not used to dry $$N{H_3}$$ gas because
A.
$${P_4}{O_{10}}$$ reacts with moisture in $$N{H_3}.$$
B.
$${P_4}{O_{10}}$$ is not a drying agent.
C.
$${P_4}{O_{10}}$$ is acidic and $$N{H_3}$$ is basic.
D.
$${P_4}{O_{10}}$$ is basic and $$N{H_3}$$ is acidic.
Answer :
$${P_4}{O_{10}}$$ is acidic and $$N{H_3}$$ is basic.
Solution :
\[\underset{\text{Acidic}}{\mathop{{{P}_{4}}{{O}_{10}}}}\,+2{{H}_{2}}O\to \underset{\begin{smallmatrix}
\text{meta phosphoric} \\
\text{acid}
\end{smallmatrix}}{\mathop{4HP{{O}_{3}}}}\,\] \[\xrightarrow[\text{basic}]{N{{H}_{3}}}\underset{\begin{smallmatrix}
\text{meta ammonium} \\
\text{phosphate}
\end{smallmatrix}}{\mathop{N{{H}_{4}}P{{O}_{3}}}}\,\]