- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 1 (19.57 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 2 (20.68 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 3 (10.55 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 4 (7.81 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 5 (11.03 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 6 (19.76 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 7 (16.86 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 8 (12.42 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 9 (10.38 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 10 (14.77 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 11 (20.98 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 12 (13.18 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 13 (21.07 KiB) Viewed 47 times
- For Phosphoric Acid H3po4 The Ka A Po4 H H3po4 B Hpo42 H H3po4 C H2po4 H H3po4 D H3po4 H Po 14 (15.83 KiB) Viewed 47 times
Kw is which of the following? a. the equilibrium constant for water which is always 1.0 x 10" 14 b. Ka x Kb for conjugate acid / base partners @ 25°C/1bar C. the log[H₂O] @ 25°C d. both a and c e. none of the above
If the Ka of a weak acid is 1.6 x 10-8, the K, of its conjugate base must be which of the following? (SATP) a. 6.20 d. 6.3 x 10-7 b. 1.0 x 10-14 e. 7.80 C. 6.8 x 10-7
What is the pH of a solution with a hydroxide ion concentration of 1.5 x 10-52 a. 1.50 b. 4.82 C. 8.51 d. 9.18
What is the percent ionization in a 0.050 mol/L NH3(aq) solution whose pH is 11.00? a. 1.1% b. 5.0% C. 0.020 % d. 2.0%
Consider the equilibrium reaction: AH = -27 kJ/mol of NO2(g) 2NO(g) + O2(a2 NO2 (g) Increasing the temperature of the system at constant pressure will cause: (a) an increase in the concentration of NO2(g) (b) a decrease in the volume of the system (c) an increase in the concentration of O2(g) (d) a decrease in the concentration of NO(g)
Consider the equilibrium reaction: Se(s) + 8 O2(g) 8 SO2 (g) In which direction will this reaction move if more solid sulfur is added to the reaction vessel? (a) in the forward direction (b) in the reverse direction (c) there will be no change in the position of the equilibrium (d) the speed of the forward and reverse reactions will decrease
Which of the following salts will result in a pH of 7 (SATP)? a. NaF b. H2S C. NH4CI d. KCI
A 0.30 mol/L aqueous solution of a weak monoprotic acid has a hydrogen ion concentration of 1.9 x 10-4 mol/L. The value of the ionization constant, Ka, for this acid is: a. 1.08 x 10-8 b. 1.2 x 10-7 c. 6.33 x 10-4 d. none of these
Identify one conjugate acid-base pair in the following equilibrium: NH4 + OH NH3 + H₂O a. NH4* and OH b. NH4* and H₂O c. NH4 and NH3 NH3 and H₂O d.
Identify the weakest acid from the following data: a. Hydrofluoric acid Ka = 6.7 x 10-14 b. Acetic acid Ka = 1.8 x 10-5 c. Hypochlorous acid K₂ = 3.0 x 10-8 d. Hydrocyanic acid Ka = 4.9 x 10-10 a
What is the hydroxide ion concentration of a solution whose pH value is 5.00? (SATP) a. 1.0 x 10-5 b. 5.0 x 10-14 c. 1.0 x 10-9 d. none of these
Given the following reaction at equilibrium: PCI) + Cl2(g) PCls (9) AH-45 kJ/mol of PCIs(a) The amount of PCIs(a) in the system can be increased by: (a) decreasing the concentration of Cl2 at constant temperature and pressure (b) increasing the temperature at constant pressure (c) adding a catalyst at constant temperature and pressure (d) increasing the pressure at constant temperature (e) injecting some He gas
2. Given the equilibrium system Nzigt 3 H2(g) 2 NH3(g) Kc = 0.065 at 450°C A 1.0 L reaction vessel is analyzed and found to contain 8.0 mol N2(a), 4.0x102 mol H2(g), and 4.4x10 mol NH3(g). Is the system at equilibrium? If not predict the direction in which the reaction will proceed to reach equilibrium. [3 marks]