Question 1

If you use 5.75 mole of NaF and dissolve this into 3.62kg of water, what will be the change in the boiling point of your solution, Assume the K_b of water is 0.51 $\degree$ C/m

Accepted Answer

0.81 $\degree$ C

Question 2

The boiling point of a solution is ______ the boiling point of the pure solvent.

Accepted Answer

higher than

Answer

the same as

Answer

higher or lower than

Answer

lower than

Question 3

The vapor pressure of a pure solvent is ___________ that of a solution

Accepted Answer

more than

Answer

less than

Answer

equal to

Answer

the same to

Question 4

Colligative properties depend on the _________ of the solute but not the __________ of the solute.

Accepted Answer

concentration; identity

Answer

reactivity; nature

Answer

identity; concentration

Answer

nature; reactivity

Question 5

Electrolytes have a greater effect on colligative properties than nonelectrolytes do because electrolytes:

Accepted Answer

produce more moles of solute particles per mole of solvent

Answer

produce fewer moles of solute particles per mole of solvent

Answer

have higher boiling points

Answer

are volatile

Question 6

Which of the following is the best application of boiling point elevation?

Accepted Answer

anti-freeze solution in an automobile during summer

Answer

making pickles

Answer

dialysis mechanism

Answer

putting salt on the road during winter

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