A) \[250\,mol\,d{{m}^{-3}}\]
B) \[300\,mol\,d{{m}^{-3}}\]
C) \[200\,mol\,d{{m}^{-3}}\]
D) \[230\,mol\,d{{m}^{-3}}\]
E) none of the above
Correct Answer: E
Solution :
\[\underset{\begin{smallmatrix} \,\,\,\,\,1 \\ 0.146 \end{smallmatrix}}{\mathop{{{N}_{2}}{{O}_{4}}}}\,\underset{\begin{smallmatrix} \,\,\,\,\,0 \\ 1.708 \end{smallmatrix}}{\mathop{2N{{O}_{2}}}}\,\,\,\,\,\,\,\underset{\begin{smallmatrix} at\,\operatorname{int}ial \\ at\,equilibrium \end{smallmatrix}}{\mathop{{}}}\,\] Volume\[=10\text{ }d{{m}^{3}}\] \[K=\frac{{{[N{{O}_{2}}]}^{2}}}{[{{N}_{2}}{{O}_{4}}]}=\frac{{{\left[ \frac{1.708}{10} \right]}^{2}}}{\left[ \frac{0.146}{10} \right]}\] \[K=1.99\,mol\,d{{m}^{-3}}\]
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