(a) What is the pH of 0.89 M potassium formate, HCOOK?
(The Ka of formic acid...
(a) What is the pH of 0.89 M potassium formate, HCOOK?
(The Ka of formic acid is
1.8 ✕ 10−4.)
(b) What is the pH of 0.65 M NH4Br? (The
Kb of ammonia is
1.76 ✕ 10−5.)
12. Calculate the pH of a 0.10 M solution of potassium formate,
KHCOO. Ka of formic acid (HCOOH) = 1.8 x 10^-4. Write the
dissociation equation and label each ion as acidic, basic, or
neutral. Also write the hydrolysis equation.
Dissociation equation: _____________________________________
cation: __________ anion: __________
Hydrolysis equation:
_________________________________________________________________________
a) Calculate the pH of a 0.250 M solution of formic acid,
HCO2H?
Ka,
HCO2H = 1.8 x
10-4. HCO2H(aq) ⇌HCO2-(aq)
+ H+(aq)
b) What is the concentration of HCO2H at
equilibrium?
Determine the pH during the titration of 24.3 mL of 0.310 M
formic acid (Ka = 1.8×10-4) by 0.442 M NaOH at the following
points. (a) Before the addition of any NaOH (b) After the addition
of 4.20 mL of NaOH (c) At the half-equivalence point (the titration
midpoint) (d) At the equivalence point (e) After the addition of
25.6 mL of NaOH
Determine the pH during the titration of 24.3
mL of 0.310 M formic acid
(Ka = 1.8×10-4) by
0.442 M NaOH at the following
points.
(a) Before the addition of any NaOH
(b) After the addition of 4.20 mL of
NaOH
(c) At the half-equivalence point (the titration midpoint)
(d) At the equivalence point
(e) After the addition of 25.6 mL of
NaOH
What is the pH of 10.00 mLs of a 0.100 Molar formic acid
solution (ka = 1.9 x 10^-4) after the following additions: A. 0.00
mLs of 0.100 M lithium hydroxide, B. 5.00 mLs of 0.100 M lithium
hydroxide, C. 10.00 mLs of 0.100 M lithium hydroxide, D. 15.00 mLs
of 0.100 M lithium hydroxide