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MHT CET · Chemistry · Chemical Kinetics

\(2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{NO}_2(\mathrm{~g}), \frac{\mathrm{d}\left[\mathrm{NO}_2\right]}{\mathrm{dt}}\)\(=0.052 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\). Calculate
\(-\frac{\mathrm{d}\left[\mathrm{O}_2\right]}{\mathrm{dt}}\)

  1. A \(0.026 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\)
  2. B \(0.052 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\)
  3. C \(0.078 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\)
  4. D \(0.114 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(0.026 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\)

Step-by-step Solution

Detailed explanation

\(-\frac{\mathrm{d}\left[\mathrm{O}_2\right]}{\mathrm{dt}} =\frac{1}{2} \frac{\mathrm{d}\left[\mathrm{NO}_2\right]}{\mathrm{dt}} \)
\( =\frac{1}{2} \times 0.052 \)
\( =0.026 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}\)