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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 find the molality of the solution of urea in ethyl alcohol based on the given vapor pressures, we will follow these steps: ### Step 1: Identify the given values - Vapor pressure of pure ethyl alcohol (\(P^0\)) = 59.2 torr - Vapor pressure of the urea solution (\(P\)) = 51.3 torr ### Step 2: Calculate the relative lowering of vapor pressure The relative lowering of vapor pressure can be calculated using the formula: ...
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