Unit Test — Unit test

Question 1

A solution contains 90 mL of methanol, 18 mL of propanol, and 2 mL of diethyl ether. Which is the solvent in this solution?

Revolt · Accepted Answer

methanol

Question 2

Which statement accurately describes part of the dissolving process of a polar solute in water?

Revolt · Accepted Answer

Water molecules surround solute molecules.

Question 3

Which is an example of a nonaqueous solution?

Revolt · Accepted Answer

gasoline

Question 4

best

Revolt · Accepted Answer

a suspension

Question 5

A can of soda contains many ingredients, including vanilla, caffeine, sugar, and water. Which ingredient is the solvent?

Revolt · Accepted Answer

water

Question 6

The graph below shows how solubility changes with temperature.How many grams of NaCl will be needed to form 600 mL of a saturated solution at 100°C?

Revolt · Accepted Answer

240 g

Question 7

Which factor influences both solubility and the rate of dissolution?

Revolt · Accepted Answer

temperature

Question 8

Which of these factors will cause a solid solute to dissolve faster?

Revolt · Accepted Answer

increasing the surface area of solute

Question 9

Which statement best describes the process of making a solution by diluting a stock solution?

Revolt · Accepted Answer

Add more solvent to decrease the concentration.

Question 10

Why is citric acid added to food?

Revolt · Accepted Answer

to add tartness

Unit Test — Unit test Answers