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The boiling point of ethanol (C2H5OH) is 78.5°C. What is
Chapter 14, Problem 76P(choose chapter or problem)
QUESTION:
Problem 76P
The boiling point of ethanol (C2H5OH) is 78.5°C. What is the boiling point of a solution of 6.4 g of vanillin m = 152.14 g/mol) in 50.0 g of ethanol (Kb of ethanol = 1.22°C/m)?
Questions & Answers
QUESTION:
Problem 76P
The boiling point of ethanol (C2H5OH) is 78.5°C. What is the boiling point of a solution of 6.4 g of vanillin m = 152.14 g/mol) in 50.0 g of ethanol (Kb of ethanol = 1.22°C/m)?
ANSWER:
Solution 76P:
Here, we are going to calculate the boiling point of the solution containing vanillin and ethanol.
Step 1:
The boiling point elevation (Tb) is proportional to the concentration of solute particles.
----(1)
where m is the molality of solute and Kb is molal boiling point elevation constant.