An aqueous CaCl2 solution has a vapor pressure of 82.1 mmhg at 50 C . The vapor pressure of pure water at this temperature is 92.6 mmhg What is the

An aqueous CaCl2 solution has a vapor pressure of 82.1 mmhg at 50 C . The vapor pressure of pure water at this temperature is 92.6 mmhg What is the concentration of in mass percent?

Change in pressure is directly proportional to mass fraction of solute.(Po – P) /Po = x(92.6 – 82.1)/92.6 = xX = 0.113 or 11.3 %