Question

0.90g of non-electrolyte was dissolved in 87.09g of benzene. This raised the boiling point of benzene by 0.25ᣞC. If the molecular mass of nonelectrolyte is 103.0 g/mol, calculate the molal elevation constant for benzene.

Answer 1

Answer:

2.5 is correct answer

Explanation:

Mark the answer brainliests

Answer 2

Answer:

2.5

Explanation:

w2= 0.90 g

w1= 87.90 g

change in boiling point= 0.25 Celsius

m2 = 103.0 g/mol

kb=?

Tb=Kb X m

0.25= Kb X w2/m2 * 1000/w1

0.25= Kb X 0.90/103 X 1000/87.90

Kb= 2.5 K Kg/mol