The reaction that occurs in a 'breathlys...

The reaction that occurs in a 'breathlyser' , a device used to determine the alcohol level in a person's blood stream, is :
`2K_(2)Cr_(2)O_(7)+8H_(2)SO_(4)+3C_(2)H_(5)OHrarr2Cr_(2)(SO_(4))_(3)+2K_(2)SO_(4)+3CH_(3)COOH+11H_(2)O` If the rate of deappearance of ethanol is `6.9` gm/min, then the rate of appearance of chromium (III) sulphate is : (Cr=52)

`4.6` gm/min

`10.35` gm/min

`39.2` gm/min

`88.2` gm/min

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The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is 2K_(2)Cr_(2)O_(7)+8H_(2)SO_(4)+3C_(2)H_(6)O to 2Cr_(2)(SO_(4))_(3)+3C_(2)H_(4)O_(2)+2K_(2)SO_(4)+11H_(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)

In the chemical reaction, K_(2)Cr_(2)O_(7)+aH_(2)SO_(4)+bSO_(2) rarr K_(2)SO_(4)+Cr_(2)(SO_(4))_(3)+CH_(2)O. a, b and c are

Balance the following equation by oxidation number method: K_(2)Cr_(2)O_(7)+FeSO_(4)+H_(2)SO_(4)=Cr_(2)(SO_(4))_(3)+Fe_(2)(SO_(4))+K_(2)SO_(4)+H_(2)O

A mixture of K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) forms

The conversion of K_(2)Cr_(2)O_(7) into Cr_(2)(SO_(4))_(3) is

K_(2)Cr_(2)O_(7)+C_(2)O_(4)^(2-)+H_(2)SO_(4)rarr K_(2)SO_(4)+CO_(2)+Cr_(2)(SO_(4))_(3)+H_(2)O In above reaction, identify the elements which do not undergo change in their oxidation state :

Na_(2)CrO_(4)+HCl to H_(2)Cr_(2)O_(7)+Na_(2)SO_(4)

GRB PUBLICATION-CHEMICAL KINETICS-Subjective Type

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