Practice Test

Question 1

Which substances will cause the greatest temperature change if the same amount of each substance is added to 1 point 0 kilograms of water?

Revolt · Accepted Answer

D: FeCl sub 3

Question 2

Which term refers to the formation of ions as a result of a chemical reaction?

Revolt · Accepted Answer

A: ionization

Question 3

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

Revolt · Accepted Answer

D: water

Question 4

A 150 milliliters sample of hydrochloric acid HCl completely reacted with 60 point 0 milliliters of a 0 point 1 0 0 cap m NaOH solution. The equation for the reaction is given. HCl plus NaOH rightarrow NaCl plus cap h sub 2 cap o What was the original concentration of the HCl solution?

Revolt · Accepted Answer

A: 1 point 5 0 cap m; D: 0 point 0 4 0 cap m

Question 5

Which best defines concentration ?

Revolt · Accepted Answer

B: ratio that describes the amount of solute divided by the amount of solvent or solution; C: ratio that describes the amount of solvent in a solution

Question 6

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

Revolt · Accepted Answer

B: methanol

Question 7

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

Revolt · Accepted Answer

B: Water molecules surround solute molecules.

Question 8

The molality of a solution that is made by dissolving a certain mass of benzene in 20 point 6 g of carbon tetrachloride is 0 point 5 2 9 m How many moles of benzene were dissolved? Use molality is equal to moles of solute over kilograms of solvent

Revolt · Accepted Answer

B: 0 point 0 1 0 9 mol

Question 9

Which of the following best explains freezing point depression ?

Revolt · Accepted Answer

B: the decrease in the freezing point of a solution as a function of the number of particles that are dissolved in the solution

Question 10

The molality of a solution that was made by dissolving NaCl in 1 point 5 kilograms of water is 0 point 4 0 m If the molar mass of NaCl is 58 point 4 4 g over mol , what is the mass of NaCl that was dissolved? Use molality is equal to moles of solute over kilograms of solvent

Revolt · Accepted Answer

B: 35 g; C: 23 g

Practice Test Answers

More from this Course

TRY EDGENUITY HACKS