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Significant Figures

Conc. H 2 SO ...

Question

Conc. $H_{2} S O_{4}$ has a density of 1.98 gm /ml and is $98 % H_{2} S O_{4}$ by weight. Its normality is

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19.8N

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39.6N

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98N

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Solution

The correct option is C 39.6N
Strength (s) of $H_{2} S O_{4} = 98 \times 19.8 g / L$
S = Eq. wt. $\times$ N
$N = \frac{S}{e q . w t} = \frac{98 \times 19.8}{49} = 39.6 N$

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