A) 560 mm Hg
B) 680 mm Hg
C) 920 mm Hg
D) 600 mm Hg
Correct Answer: C
Solution :
For first order reaction \[\underset{640-2x}{\mathop{2A(g)}}\,\,\xrightarrow{\,}\,\underset{3x}{\mathop{3B\,(g)}}\,\] \[\therefore \] \[{{p}_{Total}}=640+x\] \[k=\frac{2.303}{t}\,\log \,\frac{a}{a-x}\] \[\frac{0.693}{{{t}_{1/2}}}=\frac{2.303}{36}\log \,\frac{640}{640-2x}\] \[\frac{2.303\,\log \,2}{12}=\frac{2.303}{36}\,\log \,\frac{640}{640-2x}\] \[\log {{2}^{2}}=\log \,\frac{640}{640-2x}\] \[x=280\] \[\therefore \] \[{{p}_{Total}}\,=640+280\,=920\,mm\]You need to login to perform this action.
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