JEE Mains · Chemistry · STD 12 - 3. Chemical kinetics
The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is \(2 \mathrm{~K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+8 \mathrm{H}_{2} \mathrm{SO}_{4}+3 \mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O} \rightarrow 2 \mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}+\) \(3 \mathrm{C}_{2} \mathrm{H}_{4} \mathrm{O}_{2}+2 \mathrm{~K}_{2} \mathrm{SO}_{4}+11 \mathrm{H}_{2} \mathrm{O}\) If the rate of appearance of \(\mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}\) is \(2.67 \,\mathrm{~mol}\) \(\min ^{-1}\) at a particular time, the rate of disappearance of \(\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}\) at the same time is ...... \(\mathrm{mol}\, \mathrm{min}^{-1}\) (Nearest integer)
- A \(3\)
- B \(2\)
- C \(4\)
- D \(1\)
Answer & Solution
Correct Answer
(C) \(4\)
Step-by-step Solution
Detailed explanation
\(\left(\frac{\text { Rate of disappearance of } \mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}}{3}\right)\) \(=\left(\frac{\text { Rate of appearance of } \mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}}{2}\right)\)…
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