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Structural Isomerism

LiOH reacts w...

Question

$L i O H$ reacts with $C O_{2}$ to form $L i_{2} C O_{3}$ (atomic mass of Li = 7). The amount of $C O_{2}$ (in g) consumed by 1 g of $L i O H$ is closest to:

0.916

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1.832

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0.544

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1.088

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Solution

The correct option is A 0.916
Reaction occurs;
$2 L i O H + C O_{2} \to L i_{2} C O_{3} + H_{2} O$
Mole ratio between $C O_{2}$ and $L i O H$ is 1:2.

Molar mss of $L i O H = 24 g / m o l$
Since 48 g of $L i O H$ requires 44 g of $C O_{2}$ .
Mass of $C O_{2}$ rtequired for 1 g of $L i O H = \frac{1}{48} \times 44 = 0.916 g$

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