A solution of $$0.816g$$ of a compound ‘A’ dissolved in $$7.5g$$ of Benzene freezes at $$1.590C$$ . The molecular weight of compound ‘A’ if Kf of benzene is $$4.9$$ and melting point of Benzene is $$5.510C$$

Question

A solution of $$0.816g$$ of a compound ‘A’ dissolved in $$7.5g$$ of Benzene freezes at $$1.590C$$ . The molecular weight of compound ‘A’ if Kf of benzene is $$4.9$$ and melting point of Benzene is $$5.510C$$

Infinity Learn · Accepted Answer

It is a colligative property of solutions that is generally proportional to the molality of the added solute. The depression in the freezing point of a solution can be described by the following formula.ΔTf $$=$$  Kf × mWhereΔTf is the freezing point depressionKf is the cryoscopic constant, andm is the molality.

A solution of 0.816g of a compound ‘A’ dissolved in 7.5g of Benzene freezes at $1 {.59}^{0} C$ . The molecular weight of compound ‘A’ if $K_{f}$ of benzene is 4.9 and melting point of Benzene is $5 {.51}^{0} C$

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A solution of 0.816g of a compound ‘A’ dissolved in 7.5g of Benzene freezes at 1.590C . The molecular weight of compound ‘A’ if Kf of benzene is 4.9 and melting point of Benzene is 5.510C

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A solution of 0.816g of a compound ‘A’ dissolved in 7.5g of Benzene freezes at $1 {.59}^{0} C$ . The molecular weight of compound ‘A’ if $K_{f}$ of benzene is 4.9 and melting point of Benzene is $5 {.51}^{0} C$