Random
Increasing reactant concentration will generally:
A) slow rate
B) stop the reaction
C) increase rate
D) decrease rate
E) reverse the reaction
C — More reactants → more collisions → faster rate.
Which of the following is not a property predicted based on the Kinetic Molecular Theory?
A) It explains the low density of gases in comparison to solids and liquids.
B) It predicts a gasʹs tendency to assume the shape and volume of the container.
C) It explains why gases are compressible.
D) It predicts a gasʹs tendency to have high melting and boiling points.
E) It explains how the molecules slow down as temperature is decreased.
D) It predicts a gasʹs tendency to have high melting and boiling points.
Methanol, CH3OH, can be classified as a ________.
A) gas
B) solid
C) weak electrolyte
D) strong electrolyte
E) nonelectrolyte
E) nonelectrolyte
Which of the statements below best describes Ni (s) in the following reaction?
Ni (s) → Ni2+ (aq) + 2e-
A) Ni (s) is oxidized
B) Ni (s) is neither oxidized nor reduced
C) Ni (s) is both oxidized and reduced
D) Ni (s) is reduced
A) Ni (s) is oxidized
If the pressure of a constant amount of gas at constant temperature is increased by threefold, what happens to its volume?
A) The volume increases by six-fold.
B) The volume will not change.
C) The volume triples.
D) The volume increases by nine-fold.
E) The volume is one-third of the original volume.
E) The volume is one-third of the original volume.
The solubility of KI is 50 g in 100 g of H2O at 20 °C. If 110 grams of KI are added to 200 grams of H2O,
A) all of the KI will dissolve.
B) the solution will freeze.
C) the solution will start boiling.
D) a saturated solution will form.
E) the solution will be unsaturated.
D) a saturated solution will form.
Which pair of compounds will form a solution?
A) Na2SO4 and benzene (C6H6)
B) H2O and CCl4
C) Benzene (C6H6) and hexane (C6H14)
D) NaCl and hexane (C6H14)
E) More than one of the combinations will form solutions.
C) Benzene (C₆H₆) and hexane (C₆H₁₄)
MATCH
A) Boyle's Law
B) Charles' Law
C) Avogadro's Law
1. The volume of a gas is directly proportional to its temperature when pressure and the number of gas particles are constant.
Answer: B) Charles' Law
2. The volume of a gas is inversely proportional to its pressure when temperature and the number of gas particles are constant.
Answer: A) Boyle's Law
3. The volume of a gas is directly proportional to the number of moles of gas when pressure and temperature are constant.
Answer: C) Avogadro's Law
Which compound below becomes a strong electrolyte when dissolved in water?
A) C12H22O11 (sucrose)
B) SCl6
C) CH3CH2OH
D) KOH
E) Cl2
D) KOH
According to the reaction given below, how many grams of solid Fe(OH)2 is formed when 175 mL of 2.27 M aqueous LiOH reacts with excess aqueous FeCl2? (Note: Molar Mass of Fe(OH)2 is 89.859 g/mol)
FeCl2(aq) + 2 LiOH(aq) → Fe(OH)2(s) + 2 LiCl(aq)
A) 34.7 g
B) 35.7 g
C) 17.8 g
D) 51.0 g
E) 25.5 g
C) 17.8 g
A gas exerts a pressure of 685 mmHg and has a temperature of 245 K. What is the new
pressure of this gas, in mmHg, if the temperature is increased to 655 K? Volume and the
amount of the gas stay constant.
A) 933 mmHg
B) 556 mmHg
C) 256 mmHg
D) 1830 mmHg
E) 442 mmHg
D) 1830 mmHg
What volume (mL) of a 10.5 M solution of sodium hydorxide (NaOH) must be diluted to
prepare a 200. mL solution of 1.75 M sodium hydroxide ?
A) 101 mL
B) 1200 mL
C) 33.3 mL
D) 56.9 mL
E) 0.0919 mL
C) 33.3 mL