Reference no: EM131865471

7.134 g of a non-volatile solute is dissolved in 255.0 g of water. 

The solute does not react with water nor dissociate in solution. 

Assume that the resulting solution displays ideal Raoult's law behaviour. 

At 10°C the vapour pressure of the solution is 9.145 torr. 

The vapour pressure of pure water at 10°C is 9.209 torr. 

Calculate the molar mass of the solute (g/mol).

Now suppose, instead, that 7.134 g of a volatile solute is dissolved in 255.0 g of water. 

This solute also does not react with water nor dissociate in solution. 

The pure solute displays, at 10°C, a vapour pressure of 0.921 torr. 

Again, assume an ideal solution. 

If, at 10°C the vapour pressure of this solution is also 9.145 torr. 

Calculate the molar mass of this volatile solute.