Question
Arrange the following 0.10M solutions in order of increasing pH:
a. Nacl
b. NH4CL
C. HCL
D. NaCH3CO2
e. KOH
a. Nacl
b. NH4CL
C. HCL
D. NaCH3CO2
e. KOH
Answers
The pH is determined by the hydrolysis of the salt(for salts) or the reactin with water (as in HCl and KOH). For example,
KOH is a strong base; ie., it ionizes 100% so K^+ = OH^- = 0.1M.
NaC2H3O2 is the salt of a strong base (NaOH) and acetic acid (HC2H3O2) The Na^+ is not hydrolyzed but the acetate ion (C2H3O2^-) is. Etc. Please explain what your trouble is in answering this question so I will know how to explain.
The correct order is
HCl, NH4Cl, NaCl, NaC2H3O2, KOH
KOH is a strong base; ie., it ionizes 100% so K^+ = OH^- = 0.1M.
NaC2H3O2 is the salt of a strong base (NaOH) and acetic acid (HC2H3O2) The Na^+ is not hydrolyzed but the acetate ion (C2H3O2^-) is. Etc. Please explain what your trouble is in answering this question so I will know how to explain.
The correct order is
HCl, NH4Cl, NaCl, NaC2H3O2, KOH
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