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Assigning Oxidation Numbers

Assertion :On...

Question

Assertion :One equivalent of $M n O_{2}$ reacts with 2 equivalents of $H C l$ in the reaction, $M n O_{2} + 4 H C l ⟶ M n C l_{2} + 2 H_{2} O + C l_{2}$ . Reason: One equivalent of $M n O_{2}$ reacts with one equivalent of $H C l$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is incorrect but Reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is incorrect but Reason is correct
The balanced reaction is as follows:
$M n O_{2} + 4 H C l ⟶ M n C l_{2} + 2 H_{2} O + C l_{2}$
Here, one mole of $M n O_{2}$ reacts with 4 mole of $H C l$ .
And in each reaction, the number of equivalents of all reactants and products are same.
So, one equivalent of $M n O_{2}$ reacts with one equivalent of $H C l$ .

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