Freon 11 and pure Freon 12 vapos pressure is at 25ᵒ C and are15 lb/in2 and 85 lb/in2 respectively. These two propellants are mixed together and the mole ratio of 0.6 to 0.4. Compute the partial vapor pressures of each of Freon 11 and Freon 12 and total vapor pressure of the mixture at 25 degree celcius?

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