If all the following four compounds were sold at the same price, which would be cheapest for preparing an antifreeze solution for a car radiator?

C H_{3} O H

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C_{2} H_{5} O H

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C_{2} H_{4} (O H)_{2}

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C_{3} H_{5} (O H)_{3}

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Solution

The correct option is A $C H_{3} O H$
$\begin{matrix} Δ T_{f} = \frac{K_{f} \times ω \times 100}{M \times W} Smaller the molecolal weight more is the Δ T_{f} . Methanol has the smallest Molecular weight. Hence, option A is correct. \end{matrix}$

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Similar questions

If all the following 4 compounds were sold at the same price , which would be cheapest for preparing an antifreeze solution for a car radiator?

(A) CH₃OH

(B) C₂H₅OH

(D) C₃H₅(OH)₃

Which of the following compounds is used as an antifreeze in automobile radiators?

C_{2} H_{4} (O H)_{2}

1.113 g c m^{- 3}

(K_{f} o f H_{2} O = 1.86 K k g m o l^{- 1})

C_{2} H_{5} O H

C H_{3} C H O

C H_{3} O H

H C H O

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