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ACIDS & BASES
SOLUBILITY
REDOX
EQUILIBRIA
COLLIGATIVE PROPERTIES
100

A nucleophile donor

What is a Lewis base?

100

What is the molarity of a solution with 28 grams of table salt (NaCl) and 500. mL H2O if it makes 475 mL of solution?

3.3 M

100

The reaction at the cathode of a galvanic cell

What is reduction?

100

The equilibrium expression

2 H2 (g) + O2 (g) --> 2 H2O (l)

Kc = 1/[H2]2[O2]

Kp = 1/PH22PO2

100

What is the boiling point of a 0.24 m solution of glucose, C6H12O6, in water? (Kb for water is 5.14 K/m)

101.23 oC or 374.38 K

200

The pH of 0.025 M HCl (pKa = 0)

1.60

200

What is the molality of a solution with 28 grams of table salt (NaCl) and 500. mL H2O if it makes 475 mL of solution?

3.1 m

200

The oxidation state of nitrogen in HNO3

+5

200

A (aq) + 2 B (aq) --> 3 C (aq) + D (aq)

at equilibrium,

[A] = 0.75 M, [B] = 0.68 M, [C] = 0.79 M, [D] = 0.55 M

What is Kc?

0.78

200

What is the concentration of an aqueous fructose (C6H12O6) solution that freezes at a temperature of -2.46 oC? (kf of H2O = 1.86 K/m)

1.32 m

300

pH of 0.0039 M NaOH (pKb = 0)

11.59

300

What is the molar solubility of silver chloride (AgCl)?

Ksp = 1.8 x 10-10

1.3 x 10-5 M 

300

Balance in acidic solution 

Al (s) + Cu+ (aq) --> Al3+ (aq) + Cu (s)

Al (s) + 3 Cu+ (aq) --> Al3+ (aq) + Cu (s)

300

The equilibrium constant for the following reaction at 700 K is Kc = 6.7 x 10-3

CO(g) + 2 H2 (g) ⇆ CH3OH (g)

 If 3.14 moles of CO and 5.97 moles H2 were initially added to a 10.0-L empty vessel, what would the concentration of CO be at equilibrium.

0.314 M

300

What is the vapor pressure of a solution which contains 4.23 mol NaCl, 3.18 mol KCl, and 15.71 mol H2O?

(vapor pressure of pure H2O is 17.54 torr)

11.92 torr

400

pH of 0.076 M HNO2 (Ka = 7.08 x 10-4)

2.15

400

What is the concentration of Fe3+ in saturated Fe2S3?

Ksp = 1.4 x 10-88

1.1 x 10-18 M

400

Balance in acidic solution

MnO4- (aq) + SO2 (g) --> Mn2+ (aq) + HSO4- (aq)

6 MnO4- (aq) + 5 SO2 (g) + 13 H+ (aq) --> 6 Mn2+ (aq) + 5 HSO4- (aq) + 4 H2O (l)

400

 

For the reaction shown below, Kc = 0.654 at 600 K.

N2O4 (g) ⇆ 2 NO2 (g)

If initially, 0.0600 M of N2O4 are present in the reaction vessel, what is the equilibrium concentrations of NO2?

0.099 M

400

What is the concentration of an aqueous potassium fluoride (KF) solution that freezes at a temperature of 3.11 oCelsius? (kf of H2O = 1.86 K/m)

Trick question- no such solution can exist

500

pH of 1.3 x 10-4 HF (pKa = 3.18)

3.53

500

What is the Ksp of calcium hydroxide (Ca(OH)2)?

solubility = 0.93 g/L

7.9 x 10-6

500

Balance in basic solution

Zn (s) + NO2- (aq) --> Zn2+ (aq) + NH4+ (aq)

6 H2O (aq) + 3 Zn (s) + NO2- (aq) --> 3 Zn2+ (aq) + NH4+ (aq) + 8 OH - (aq)

500

The equilibrium constant Kc for the following reaction at 800°C is 3.74 x 105

H2(g) + I2(g) ⇆ 2 HI(g)

If 6.25 moles of HI were initially added to a 15.0-L empty vessel, what would the concentration of H2 be at equilibrium.

1.06 x 10-3 M

500

What is the concentration of an aqueous calcium chloride (CaCl2) solution that boils at a temperature of 105.6 oC? (kb of H2O = 0.512 K/m)

3.65 m