Question- At 28.0 °C, the vapor pressure of n-propyl mercaptan, C3H7SH, is 2.33 x 10^4 Pa, while that of acetonitrile, CH3CN, is 1.36 x10^4 Pa. What is the vapor pressure, at 28.0 °C, of a solution made by mixing 100.0 g of C3H7SH and 100.0 g CH3CN?
I want you to clarify the chemistry in this above problem.