The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is 2…

Question

The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is

$2 K_{2} {Cr}_{2} O_{7} + 8 H_{2} {SO}_{4} + 3 C_{2} H_{6} O \to 2 {Cr}_{2} {({SO}_{4})}_{3} + 3 C_{2} H_{4} O_{2} + 2 K_{2} {SO}_{4} + 11 H_{2} O$

If the rate of appearance of ${Cr}_{2} {({SO}_{4})}_{3}$ is $2.67 mol \min^{- 1}$ at a particular time, the rate of disappearance of $C_{2} H_{6} O$ at the same time is mol $\min^{- 1} .$ (Nearest integer)

MARKS Content Team · Accepted Answer

Correct answer: 4. 1/3(-dC_2H_6O)/dt=1/2dCr_2SO4_3/dt 1/3 (Rate of disappearance of C_2H_6O=1/2 (Rate of disappearance of Cr_2SO4_3 Rate of disappearance of C_2H_6O=(2.67 mol/min×3)/2=4.005 mol/min

Solution

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