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Problem 9 Hard Difficulty

The figure shows two identical volumetric flasks containing the same solution at two temperatures.
(a) Does the molarity of the solution change with the change in temperature?
(b) Does the molality of the solution change with the change in temperature? [Section 13.4]

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Video Transcript

this question presents us with two identical solutions at different temperatures. So what we have is too. But development class is supposed to be this identical solution. And all that's changed is the temperature and what we can see that as the temperature goes up, the volume goes up a cz. Well, this is because liquids expand when heated. So in part, they were asked, Will the polarity of the solution changed with temperature? We call that polarity. Is most of cellular leaders a solution? Because thesis allusions air the same the moles of Saul you like? How much is this? All is the same. But the leaders of solution clearly is going to change. Um so as my temperature goes up, my volume goes up My mill arat e should change. So the answer is yes. Well, already changed with temperature because the volume will change Then Part B says, Well, the Malala t change with temperature. Recall that morality is mall so solid, which we've already said will stay the same. Ok, divided by kilograms, a solvent. Now the volume of the liquid may have changed, but the amount of stuff in there, the amount of matter, will not so the mass will be unchanged regardless of the temperature. So the kilograms insolvent will also say the same. And so if the most solid you killer of the Sullivan stayed the same, the morality will also say the same similarity does not change with temperature because the amount of mass in the number of moles will not change with temperature.

Rice University
Top Chemistry 102 Educators
TD
Theodore D.

Carleton College

Nadia L.

Rice University

Allea C.

University of Maryland - University College

Jake R.

University of Toronto

Chemistry 102 Bootcamp

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