Ka and Kb Calculations

Acetic Acid is a weak monoprotic acid. It's concentration is 0.20M and it's equilibrium concentration of H+ ions is 0.0019M. Calculate it's Ka value.

• 1.8x10 -5

• 1.8x10 -15

• .0019

• 5.56x10 -10

Formic Acid is a weak monoprotic acid. It's initial concentration is 0.10M and it's equilibrium concentration of H+ ions is 0.0042M. Calculate it's Ka value.

• .150

• 12.56x10 -6

• 1.8x10 -4

• None of these are correct

Isobutlyamine is a weak base. It's initial concentration is 0.55M and it's equilibrium concentration of OH- ions is 0.0040M. Calculate it's Kb value.

• .055

• 4.0x10 -3

• 1.6x10 -5

• 3.1x10 -4

Gallic Acid is a weak monoprotic acid. It's concentration is 0.280M and it's equilibrium concentration of H+ ions is 0.0033M. Calculate it's pH value.

• 3.9x10 -5

• 4.96

• 2.48

• .280

Uric Acid is a weak monoprotic acid. It's initial concentration is 0.110M and it's equilibrium concentration of H+ ions is 0.034M. Calculate the final concentration of Uric acid.

• .011

• .034

• .076

• 1.47

Acetic Acid is a weak monoprotic acid. It's concentration is 0.20M and it's Ka value is 1.8x10 -5. Calculate it's pH value.

• .698

• 2.72

• 11.28

• None of the answers are correct

Trimethyamine is a weak base. It's concentration is 0.390M and it's equilibrium concentration of OH- ions is 0.0044M. Calculate it's pH value.

• 2.36

• 11.6

• .410

• None of the above are correct

Ammonia is a weak base. It's concentration is 0.150M and it's Kb value is 1.7x10 -5. Calculate it's pH value.

• 2.80

• 11.2

• Both answers are correct

• None of the above are correct

Butylamine is a wack base. It's concentration is 0.230M and it's equilibrium concentration of OH- ions is 8.6x10 -6M. Calculate it's Kb value and pOH.

• 3.2x10 -10 and 9.49

• 8.6x10 -10 and 9.07

• 3.2x10 -10 and 4.93

• None of the above