Calculate the vapor pressure of a sol'n containing 28.5g C3H8O3 (glycerine) in 125mL of water a 30.0 C. The vapor pressure of pure water at this temperature is 31.8 torr. Assume that glycerine is no volatile and dissolves molecularly (ie. it is not ionic) and use a density of 1.00g/mL for the water.

I'm not sure how to approach this. I am working out of Tro's second edition Principles of Chemistry if you are able to access that book and reference pages to help me. Thanks in advance.

Question

Calculate the vapor pressure of a sol'n containing 28.5g C3H8O3 (glycerine) in 125mL of water a 30.0 C. The vapor pressure of pure water at this temperature is 31.8 torr. Assume that glycerine is no volatile and dissolves molecularly (ie. it is not ionic) and use a density of 1.00g/mL for the water.

I'm not sure how to approach this. I am working out of Tro's second edition Principles of Chemistry if you are able to access that book and reference pages to help me. Thanks in advance.

wolfe8 · Answer

Welcome to OpenStudy. I'm not sure, but will the formula PV=nRT help? If so, please make sure the R you use is compatible with the units you have. Good luck.