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.
Correct Answer: C
Solution :
[c] \[\underset{Acidic}{\mathop{{{P}_{4}}{{O}_{10}}}}\,+2{{H}_{2}}O\xrightarrow{{}}\underset{\begin{smallmatrix} meta\,phosphoric \\ acid \end{smallmatrix}}{\mathop{4HP{{O}_{3}}}}\,\] \[\xrightarrow[basic]{N{{H}_{3}}}\underset{\begin{smallmatrix} meta\,ammonium\, \\ phosphate \end{smallmatrix}}{\mathop{N{{H}_{4}}P{{O}_{3}}}}\,\]
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