$$P_{\text{gas}} = X_{\text{gas}} \times P_{\text{total}}$$

$$\text{Equivalents} = \text{moles} \times \text{charge}$$

Question 1

A sample of gas occupies 2.50 L at 1.00 atm and 300 K. What will be its volume if the pressure is increased to 2.00 atm at constant temperature?

Accepted Answer

$$1.25\ \mathrm{L}$$

Question 2

Which of the following correctly describes a solution that is hypertonic compared to blood plasma?

Accepted Answer

It has a higher solute concentration than blood plasma, causing water to flow out of cells.

Question 3

Which equation would you use to calculate the new concentration of a solution after dilution?

Accepted Answer

$$C_1V_1 = C_2V_2$$

Question 4

A solution is made by dissolving 0.5 mol NaCl in enough water to make 1.0 L of solution. What is the molarity of NaCl?

Accepted Answer

$$0.5\ \mathrm{mol/L}$$

Question 5

Which of the following is the correct IUPAC name for a straight-chain alkane with 7 carbon atoms?

Accepted Answer

Heptane

Question 6

Which of the following is a Bronsted-Lowry acid-base pair?

Accepted Answer

$$\mathrm{NH_4$^+}$$ / $$\mathrm{NH_3$}$$

Question 7

A buffer system in blood plasma helps maintain pH by:

Accepted Answer

Resisting changes in pH when small amounts of acid or base are added.

Question 8

Which of the following compounds is organic?

Accepted Answer

$$\mathrm{C_2H_6}$$

Question 9

What is the pH of a solution with $$[H^+] = 1 	imes 10$$^{-4}$$\ \mathrm{M}$$?

Accepted Answer

$$4$$

Question 10

Which of the following best describes the effect of adding more solute to a saturated solution?

Accepted Answer

The added solute will not dissolve and will remain as a solid.

Question 11

A patient receives an intravenous solution of 0.9% NaCl. This solution is:

Accepted Answer

Isotonic to blood plasma

Question 12

Which of the following is the correct formula for calculating the partial pressure of a gas in a mixture?

Accepted Answer

$$P_{	ext{gas}} = X_{	ext{gas}} 	imes P_{	ext{total}}$$

Question 13

Which of the following is a correct condensed structural formula for butane?

Accepted Answer

$$\mathrm{CH_3CH_2CH_2CH_3}$$

Question 14

Which of the following is the correct formula for Gay-Lussac's Law?

Accepted Answer

$$\dfrac{P_1$}{T_1$} = \dfrac{P_2$}{T_2$}$$

Question 15

A solution contains 0.2 mol of KCl in 500 mL of water. What is the molarity of the solution?

Accepted Answer

$$0.4\ \mathrm{mol/L}$$

Question 16

Which of the following is a property of alkanes?

Accepted Answer

They are generally nonpolar and insoluble in water.

Question 17

Which of the following is the correct formula for calculating the number of equivalents in a solution?

Accepted Answer

$$	ext{Equivalents} = 	ext{moles} 	imes 	ext{charge}$$

Question 18

Which of the following is the correct formula for calculating pOH from $$[OH^-]$$?

Accepted Answer

$$\mathrm{pOH} = -\log[OH^-]$$

Question 19

Which of the following best describes the result of mixing a strong acid with a strong base?

Accepted Answer

A neutralization reaction producing water and a salt.

GOB Chemistry Study Guide: Gases, Solutions, Acids & Bases, and Organic Compounds (Ch. 8.4–11.4)

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