l Verizon 2:27 PM 1 * 94%)110, + a session.masteringchemistry.com C Homework Set

Question

l Verizon 2:27 PM 1 * 94%)110, + a session.masteringchemistry.com C Homework Set #10 Key Concept Problem 9.22 -Part A Which curve represents the pure solvent, and which the solution? The red curve represents the solution and the green curve represents the pure solvent O The red curve represents the pure solvent and the green curve represents the solution. Previous Answers Correct -Part B What is the approximate boiling point elevation for the solution? Express your answer using one significant figure Request Answer -Part C What is the approximate concentration of the solution in mol/kg, if 1 mol of solute particles raises the boiling point of 1 kg of solvent by 3.63 C? Express your answer using one significant figure. Provide Feedback

Explanation / Answer

part A) The red curve represents the pure solvent and the green curve represents the solution.

explanation:

At a given temperature the vapor pressure of pure solvent is greater than the vapor pressure of solution,or adding a solute causes lowering of vapor pressure. According to raoult's law, P(pure)*mole fraction of solute=P(solution)

So p(pure) >>P(solution ) as mole fraction is between 0 to 1.

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