Question

The freezing point depression constant of water is 1.86°C m^-1. If 5.00 g of Na₂SO₄ is dissolved in 45.0 g of H₂O, the freezing point is found to be -3.82°C. Calculate the van’t Hoff factor for Na₂SO₄. 

a) 0.381 

b) 2.05 

c) 2.63 

d) 3.11

Answer 1

Correct option is c) 2.63