Amongst the following, which has the highest molecular mass?

C l_{2}

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N_{2}

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C H_{3} O H

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N H_{3}

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Solution

The correct option is A $C l_{2}$
The molecular masses of various compounds can be calculated as:

(i) $C l_{2}$ ; $2 \times 35.5$ $=$ $71 g / m o l$

(ii) $N_{2}$ ; $2 \times 14$ $=$ $28 g / m o l$

(iii) $C H_{3} O H$ ; $12 + 3 \times 1 + 16 + 1$ $=$ $32 g / m o l$

(iv) $N H_{3}$ ; $14 + 3 \times 1$ $=$ $17 g / m o l$

Thus $C l_{2}$ molecule has the highest molecular mass of $71$ moles.

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Similar questions

H_{2}, O_{2}, C l_{2}, C O_{2}, C H_{4}, C_{2} H_{6}, C_{2} H_{4}, N H_{3}, C H_{3} O H

Question 1
Calculate the molecular masses of $H_{2}, O_{2}, C l_{2}, C O_{2}, C H_{4}, C_{2} H_{6}, C_{2} H_{4}, N H_{3}, C H_{3} O H$ .

H_{2}, O_{2}, C l_{2}, C O_{2}, C H_{4}, C_{2} H_{6}, C_{2} H_{4}, N H_{3}, C H_{3} O H

C l_{2}

N H_{3}

Calculate the molecular masses of $H_{2}, O_{2}, C O_{2}, N H_{3}, C H_{3} O H .$ [5 MARKS]

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