The freezing point depression constant for water is –1.860C m–1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, the freezing point is changed by –3.820C, calculate the van't Hoff factor for Na2SO4.
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Detailed Solution
Kf(H2O) = 1.86KKgmole-1Note: can be in celcius(or)Kelvin scale.Magnitude of change in temp. will be the same irrespective of the scale in which the temp. is measured
The freezing point depression constant for water is –1.860C m–1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, the freezing point is changed by –3.820C, calculate the van't Hoff factor for Na2SO4.