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Chemistry
Weak acids
The correct order of acidic strength of carboxylic acid is:
(A) formic acid < benzoic acid < acetic acid
(B) formic acid < acetic acid < benzoic acid
(C) acetic acid < formic acid < benzoic acid
(D) acetic acid < benzoic acid < formic acid
Chemistry
Weak acids
Which is the strongest Lewis acid?
a.) \[B{F_3}\]
b.) \[BC{l_3}\]
c.) \[BB{r_3}\]
d.) \[B{I_3}\]
Chemistry
Weak acids
How do you calculate the pH of a weak acid?
Chemistry
Weak acids
Out of \[{H_2}{S_2}{O_3},\,{H_2}{S_4}{O_6},\,{H_2}S{O_5}\, and \,{H_2}{S_2}{O_8}\] peroxy acids are
A)\[{H_2}{S_2}{O_3},\,{H_2}{S_4}{O_6}\]
B)\[{H_2}{S_4}{O_6},\,{H_2}S{O_5}\]
C)\[{H_2}S{O_5},\,{H_2}{S_2}{O_8}\]
D)\[{H_2}{S_2}{O_3}\,and\,{H_2}{S_2}{O_8}\]

Chemistry
Weak acids
How do you calculate the pH of a weak acid?
Chemistry
Weak acids
How can $C{{H}_{3}}OH$ be a Lewis acid?
Chemistry
Weak acids
How can I calculate the titration of a weak acid and a strong base?

Chemistry
Weak acids
Marshall’s acid is:
(A) ${{H}_{2}}{{S}_{2}}{{O}_{5}}$
(B) ${{H}_{2}}{{S}_{2}}{{O}_{8}}$
(C) ${{H}_{2}}S{{O}_{6}}$
(D) ${{H}_{2}}S{{O}_{4}}$

Chemistry
Weak acids
A weak acid HA has pH = 4. This can confirm: (i) $C = {{10}^{-3}},\alpha $ = 10 %, (ii) $C={{10}^{-3}},{{K}_{a}}={{10}^{-6}}$ (iii) $\left| {{A}^{-}} \right|={{10}^{-4}}$
A. Only (i) is correct
B. both (i) and (ii) are correct
C. (i),(ii),(iii) are correct
D. All are correct

Chemistry
Weak acids
For a weak acid $\text{HA}$
\[\text{HA}\,\,\rightleftharpoons \,\,{{\text{H}}^{\text{+}}}\text{+}\,{{\text{A}}^{\text{-}}}\,\,\,\,{{\text{K}}_{\text{a}}}\text{=10}\]
When the concentration of the acid is $\text{10M}$, then the degree of dissociation of acid is-
(A) $1$
(B) $0.618$
(C) $0.309$
(D) None of them

Chemistry
Weak acids
When add 0.01M HCl in aqueous solution of acetic acid:
A) $C{{H}_{3}}CO{{O}^{-}}$ molar conc. is decrease
B) $C{{H}_{3}}COO{{H}^{{}}}$ molar conc. is decrease
C) $C{{H}_{3}}CO{{O}^{-}}$ molar conc. is increase
D) None of these

Chemistry
Weak acids
The weakest acid among the following acid-
A) Peroxyacetic acid
B) Acetic acid
C) Chlororacteic acid
D) Tricholoacetic acid
E) Propanoic acid.

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