What is the boiling point of the solution if 25g ki is

Question

1A. What is the freezing point of this solution if 30g Na₂SO₄ is dissolved in 800ml of water? Density of water is 1g/ml. K_f = 1.86°C kg/mol

1B. What is the boiling point of the solution if 25g KI is dissolved in 800ml of water? Density of water is 1g/ml. K_b= 0.51°C kg/mol