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Question

Molar mass of Glucose is:
$180 g$
$190 g$
$129 g$
$200 g$

A

190 g

B

180 g

C

200 g

D

129 g

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Solution

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Glucose is a simple sugar with the molecular formula $C_{6} H_{12} O_{6}$ .It is soluble in water and acetic acid.

Molar mass of glucose can be calculated by the sum of relative atomic masses of atoms in a molecule of a substance.

As we know, atomic mass of $C$ = $12$
atomic mass of $H$ = $1$
atomic mass of $O$ = $16$

Molar mass of $C_{6} H_{12} O_{6}$ = $6 \times 12 + 1 \times 12 + 6 \times 16$ = $72 + 12 + 96$ = $180$

So, the molar mass of glucose is $180 g$ .

$(A)$ $180 g$ is correct answer.

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