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JEE Main 20139 AprilOnline

Exam: JEE Main
Year: 2013
Date: 9 April
Mode: Online
Subject: Chemistry
Chapter: Redox Reactions

JEE Main 2013 · 9 April · Online · Chemistry · Redox Reactions

Given : XNa_2 HAsO_3+YNaBrO_3+ZHCl arrow NaBr+H_3 AsO_4+NaCl The...

Given :

\mathrm{XNa}_2 \mathrm{HAsO}_3+\mathrm{YNaBrO}_3+\mathrm{ZHCl} \rightarrow \mathrm{NaBr}+\mathrm{H}_3 \mathrm{AsO}_4+\mathrm{NaCl}

The values of

\mathrm{X}, \mathrm{Y}

and

\mathrm{Z}

in the above redox reaction are respectively :

Options

A $2,1,2$
B $2,1,3$
C $3,1,6$
D $3,1,4$

Correct answer

C. $3,1,6$

Step-by-step solution

On balancing the given reaction, we find

3 \mathrm{Na}_2 \mathrm{HAsO}_3+\mathrm{NaBrO}_3+6 \mathrm{HCl}\longrightarrow 6 \mathrm{NaCl}+3 \mathrm{H}_3 \mathrm{AsO}_4+\mathrm{NaBr}

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