# Nike is evaluating building their own fitness tracker that pairs with their fitness apps. They don't...

##### Liquid C and D form a real solution at 25 °C. The vapor pressure of pure...
Liquid C and D form a real solution at 25 °C. The vapor pressure of pure liquid C and D is 0.75 and 1.50 atm, respectively. At the composition of solution XC = 0.5, the liquid pressure of C is 0.25 atm. Determine the activity of liquid C and the vapor pressure of liquid D at the above mentioned ...