A) A 0.20 M weak acid solution has a pH of 1.20. Find Ka for the acid. Hints: Write out the acid ionization reaction (ju

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A) A 0.20 M weak acid solution has a pH of 1.20. Find Ka
for the acid.
Hints: Write out the acid ionization reaction (just use HA as
the weak acid), Ka expression, ICE table You SHOULD NOT use the “x
is small” approximation to solve this problem.
Enter your response in regular number notation - NOT scientific
- with 2 significant figures!
B) Consider the titrations of the SAME CONCENTRATIONS of
HCl and HClO by NaOH. Which is the most accurate statement?
Question 5 options:
Both will have the same initial pH
HCl will have a higher initial pH.
HClO will have a higher initial pH.
C) Consider the titrations of HCl and HClO by NaOH. Which
is the most accurate statement?
HCl will be basic and HClO will have a pH = 7 at the equivalence
point.
Both will have a basic pH at their equivalence points.
Both will have a pH = 7 at their equivalence points.
HCl will have a pH = 7 and HClO will be basic at the equivalence
point.
D) A 30.0 mL sample of 0.15 M HCl is titrated with 0.20 M
KOH. Determine the volume of base needed to reach the equivalence
point.
E) A 30.0 mL sample of 0.15 M HCl is titrated with 0.20 M
KOH. Determine the pH when 20 mL of base have been added.
F)In the buffer region of a weak acid titration by a strong base
Calculate the pH of a solution that is both 0.24 M acetic acid,
HC2H3O2, and 0.12 M sodium
acetate, NaC2H3O2. For acetic
acid, the Ka = 1.8 x 10-5.