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  • An ideal solution is made by mixing 10 mol of X and 20 mol of Y. The vapour pressure of the solution is <img alt="\left ( P_{x}^{o}=200\; torr,P_{y}^{o}=100\; torr \right )" src="https://entranceco

An ideal solution is made by mixing 10 mol of X and 20 mol of Y. The vapour pressure of the solution is \left ( P_{x}^{o}=200\; torr,P_{y}^{o}=100\; torr \right )

Option: 1

100


Option: 2

200


Option: 3

\frac{200}{3}

 


Option: 4

\frac{400}{3}


Answers (1)

best_answer

Answer (4)

X_{x}=\frac{n_{x}}{n_{x}+n_{y}}=\frac{10}{10+20}=\frac{1}{3};X_{y}=\frac{2}{3}

P_{sol}=P_{x}^{o}.X_{x}+P_{y}^{o}X_{y}

=\frac{1}{3}\times 200+\frac{2}{3}\times 100=\frac{400}{3}

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Gunjita

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