d
(d) \(\mathop {\mathop {N{H_4}HS}\limits_{\rm{a}} }\limits_{{\rm{a}} - {\rm{x}}} \) \( \rightleftharpoons \) \(\mathop {\mathop {N{H_{3\,(g)}} + {H_2}{S_{(g)}}}\limits_{0.5{\rm{atm}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} }\limits_{0.5 + {\rm{x}}\,\,\,\,\,\,\,\,\,\,\,{\rm{x}}\,\,\,\,\,\,} \)
Total pressure \( = 0.5 + 2x = 0.84\)
i.e., \(x = 0.17\)
\({K_p} = {P_{N{H_3}}}.{P_{{H_2}S}}\) \( = (0.67).\,(0.17)=0.1139\)