Write the bal...

Question

Write the balanced equation for the following,
"Potassium permanganate is reacted with warm solution of oxalic acid in the presence of sulphuric acid":

2 K M n O_{4} + 3 H_{2} {S O}_{4} + 5 {(C O O H)}_{2} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 8 H_{2} O + 10 {C O}_{2}

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2 K M n O_{4} + 3 H_{2} {S O}_{4} + 4 {(C O O H)}_{2} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 7 H_{2} O + 10 {C O}_{2}

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2 K M n O_{4} + 5 H_{2} {S O}_{4} + 6 {(C O O H)}_{2} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 8 H_{2} O + 10 {C O}_{2}

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None of these

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Solution

The correct option is B $2 K M n O_{4} + 3 H_{2} {S O}_{4} + 5 {(C O O H)}_{2} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 8 H_{2} O + 10 {C O}_{2}$
$2 K M n O_{4} + 3 H_{2} {S O}_{4} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 3 H_{2} O + 5 [O]$
$[{(C O O H)}_{2} + [O] \to 2 {C O}_{2} + H_{2} O] \times 5$
---------------------------------------------------------------------------------------
$2 K M n O_{4} + 3 H_{2} {S O}_{4} + 5 {(C O O H)}_{2} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 8 H_{2} O + 10 {C O}_{2}$

The balanced reaction is :

$2 K M n O_{4} + 3 H_{2} {S O}_{4} + 5 {(C O O H)}_{2} \to K_{2} {S O}_{4} + 2 M n {S O}_{4} + 8 H_{2} O + 10 {C O}_{2}$

Hence,option A is correct.

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