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Standard XII

Chemistry

Valency and Oxidation State

0.84 g iron o...

Question

$0.84$ g iron one containing $x$ percent of iron was taken in a solution containing all the iron in ferrous condition. The solution required $x$ mL of a dichromatic solution for oxidizing the iron content to ferric state. The strength of dichromatic solution will be:

0.15 N

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0.30 N

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0.45 N

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0.60 N

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Solution

The correct option is B $0.15 N$
Meq. of $F e =$ Meq. of $K_{2} C r_{2} O_{7}$
$\frac{0.84 \times \frac{x}{100}}{56} \times 1000 = x \times N$ $⟹ N = 0.15$
Hence, the strength of dichromate solution will be $0.15 N$ .

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0.84 g iron one containing x percent of iron was taken in a solution containing all the iron in ferrous condition. The solution required x mL of a dichromatic solution for oxidizing the iron content to ferric state. The strength of dichromatic solution will be:

The correct option is B 0.15 N Meq. of Fe= Meq. of K2Cr2O70.84×x10056×1000=x×N ⟹N=0.15Hence, the strength of dichromate solution will be 0.15 N.

$0.84$ g iron one containing $x$ percent of iron was taken in a solution containing all the iron in ferrous condition. The solution required $x$ mL of a dichromatic solution for oxidizing the iron content to ferric state. The strength of dichromatic solution will be:

The correct option is B $0.15 N$
Meq. of $F e =$ Meq. of $K_{2} C r_{2} O_{7}$
$\frac{0.84 \times \frac{x}{100}}{56} \times 1000 = x \times N$ $⟹ N = 0.15$
Hence, the strength of dichromate solution will be $0.15 N$ .