Posted by Bianca on Tuesday, March 8, 2011 at 8:39pm.
delta T = i*Kf*molality
i = 1 for glucose
i = 3 for BaCl2
i = 2 for NaCl
i = 3 for Na2SO4
You CAN calculate each with the data given and arrange them from the answers OR you can look at i*m and see which is the largest. The largest value of i*m will have the lowest freezing point (the largest delta T) and the smallest value of i*m will have the highest freezing point (smallest delta T).
What is the boiling point of a solution made by mixing 115 g NaCl in 1 kg of water? (Kb for water is 0.512 C/m)
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