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Oxidation and Reduction

Breathalyzers...

Question

Breathalyzers detect alcohol via:

Cr₂O₇^2- + C₂H₅OH → Cr³⁺ + CH₃CHO

A

Ethanol - reductant; no oxidant

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B

Ethanol - reductant; Cr₂O₇^2- - oxidant

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C

Ethanol - oxidant; Cr³⁺- reductant

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D

Ethanol - reductant; Cr³⁺ - oxidant

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Solution

The correct option is B
Ethanol - reductant; Cr₂O₇^2- - oxidant

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Similar questions

Q. What are the stoichiometric coefficients in the balanced redox reaction only for the species in the unbalanced reaction respectively.This reaction is used by the Breathalyzer to detect ethyl alcohol in a driver's breath?

C_{2} H_{5} O H + C r_{2} O_{7}^{2 -} \to C H_{3} C O O H + C r^{3 +}

Q. What are the stoichiometric coefficients in the balanced redox reaction only for the species in the unbalanced reaction respectively.This reaction is used by the Breathalyzer to detect ethyl alcohol in a driver's breath?

C_{2} H_{5} O H + C r_{2} O_{7}^{2 -} \to C H_{3} C O O H + C r^{3 +}

Q. Iodoform test can be answered by
A)

C H_{3} C H O

C H_{3} C O C H_{3}

C_{2} H_{5} O H

(C H_{3})_{2} C H O H

Q. Which of the following compounds will give a positive iodoform test?

C_{2} H_{5} O H

C H_{3} C H O

C H_{3} O H

H C H O

Q. What is the formula mass of ethyl alcohol

C_{2} H_{5} O H

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