Exam (elaborations)
Portage Learning - CHEM 103 MODULE 6 Exam
- Course
- CHEM 103
- Institution
- Portage Learning
Portage Learning - CHEM 103 MODULE 6 Exam
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Question 1 ptsQuestion 2 ptsPortage Learning - CHEM 103 MODULE 6 Exam
You may find the following resources helpful:
Scientific Calculator Periodic Table Equation Table Links to an external site. Why do granulated sugar crystals dissolve more quickly than sugar cubes?
Granulated sugar crystals dissolve more quickly since they are smaller crystals with a greater surface area since solids leave the surface of their bulk solids to dissolve.
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Scientific Calculator Periodic Table Equation Table Links to an external site. E xp l a i n wh y water boils at 100oC rather than from 100oC to 101oC? Your Answer:
When water reaches 100oC, the temperature remains constant since all of the energy being added is being used to overcome forces of attraction between the particles and separate them so the temperature does not rise.
the temperature remains constant since all of the energy being added is being used to overcome forces of attraction between the
particles and separate them 4
Question 4 pts
Question 3 pts
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Scientific Calculator Periodic Table Equation Table Links to an external site. Rank and explain how the freezing point of 0.100 m solutions of
the following ionic electrolytes compare. List from lowest freezing
point to highest freezing point.
AlF3, Al2(SO4)3, CsI, MgBr2
CsI Lowest FP
AlF3 →Al+3+3 F-∆tf = 1.86 x 0.1 x 4
= 3rd lowest FP
Al2(SO4)3→2 Al+3+3 SO -3∆tf = 1.86 x 0.1 x 5 =
lowest FP
CsI →Cs++I-∆tf = 1.86 x 0.1 x
2
= highest FP
MgBr2 →Mg+2+2 Br-∆tf = 1.86 x 0.1 x 3
= 2nd lowest FP
FP:Al2(SO4)3 < AlF3 < MgBr2 < CsI
You may find the following resources helpful:
Scientific Calculator Periodic Table
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