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The vapour pressure of ethyl alcohol at ...

The vapour pressure of ethyl alcohol at `25^@C` is 59.2 torr. The vapour pressure of a solution of urea in ethyl alcohol is 51.3 torr. What is the molality of the solution?

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To solve the problem step by step, we will use the concepts of vapor pressure and molality. ### Step 1: Understand the given data - The vapor pressure of pure ethyl alcohol (P₀) at 25°C = 59.2 torr - The vapor pressure of the urea solution (Pₛ) = 51.3 torr ### Step 2: Calculate the lowering of vapor pressure The lowering of vapor pressure (ΔP) can be calculated as: ...
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