$$2.5 \times 10$$^{-4}$$\ \mathrm{M}$$

Question 1

Which of the following molecules is expected to have the highest boiling point due to hydrogen bonding?

Accepted Answer

H\_2O

Question 2

Arrange the following atoms in order of increasing electronegativity: Ba, Ca, Ga, Se.

Accepted Answer

Ba \u003c Ca \u003c Ga \u003c Se

Question 3

Which of the following compounds is most likely to be soluble in water?

Accepted Answer

CH\_3OH (methanol)

Question 4

A solution contains 0.50 mol of CH\_3COOH in 2.0 L of water. What is its molarity?

Accepted Answer

$$0.25\ \mathrm{mol/L}$$

Question 5

Which of the following is a strong electrolyte when dissolved in water?

Accepted Answer

NaCl

Question 6

Which of the following ions will make a compound insoluble in water?

Accepted Answer

Ag^+

Question 7

What is the concentration in ppm of a solution made by dissolving 5.0 mg of NaCl in 1000 g of water?

Accepted Answer

$$5.0\ \mathrm{ppm}$$

Question 8

Which of the following best explains why ice floats on water?

Accepted Answer

Hydrogen bonds in ice create a lattice structure that increases its volume and decreases its density.

Question 9

Which of the following is the correct net ionic equation for the neutralization of HCl with NaOH?

Accepted Answer

$$\mathrm{H}^+(aq) + \mathrm{OH}^-(aq) \rightarrow \mathrm{H}_2\mathrm{O}(l)$$

Question 10

A solution has a hydrogen ion concentration of $$2.0 	imes 10$$^{-7}$$\ \mathrm{M}. $$What is its pH?

Accepted Answer

$$6.7$$

Question 11

Which of the following statements about acids and bases is correct?

Accepted Answer

A strong base dissociates completely in water.

Question 12

How many moles of NaOH are needed to neutralize 3.0 L of 0.60 M H\_2SO\_4 solution?

Accepted Answer

$$3.6\ \mathrm{mol}$$

Question 13

Which of the following compounds will NOT conduct electricity when dissolved in water?

Accepted Answer

C\_6H\_12O\_6 (glucose)

Question 14

A solution has a pH of 3.6. What is the hydrogen ion concentration?

Accepted Answer

$$2.5 	imes 10$$^{-4}$$\ \mathrm{M}$$

Question 15

Which of the following best describes the relationship between [H^+] and [OH^-] in a neutral solution at 25°C?

Accepted Answer

$$[H^+] = [OH^-]$$

Question 16

Which of the following molecules can form hydrogen bonds with water?

Accepted Answer

NH\_3

Question 17

What is the mass of Ba(OH)\_2 needed to neutralize 1.2 L of 0.8 M HCl solution? (Ba(OH)\_2 = 171 g/mol)

Accepted Answer

$$82\ \mathrm{g}$$

Question 18

Which of the following best explains why 'like dissolves like'?

Accepted Answer

Polar solvents dissolve polar solutes due to similar intermolecular forces.

General Chemistry – CHM110: Water, Bonding, and Solution Chemistry

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