314744
Which among the following salt solution in water shows \(\mathrm{pH}\) greater than 7 ?
1 sodium acetate
2 sodium sulphate
3 copper sulphate
4 Ammonium chloride
Explanation:
Sodium acetate is a salt of weak acid and strong base. Therefore, it is basic in nature with \(\mathrm{pH}\) greater than 7. \(\mathrm{Na}_{2} \mathrm{SO}_{4}, \mathrm{pH}=7 ; \mathrm{CuSO}_{4}, \mathrm{pH}\) is less than 7; \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{pH}\) is less than 7 .
MHTCET - 2021
CHXI07:EQUILIBRIUM
314745
The formula to find \(\mathrm{pH}\) of the aqueous solution of an amphoteric salt \(\mathrm{NaHS}\) is
\(\mathrm {\mathrm{pH}}\) of aqueous solution of an amphoteric salt is equal to the average of the \({\text{pKa}}\) of the salt and its conjugate acid.
CHXI07:EQUILIBRIUM
314732
If \({\rm{p}}{{\rm{K}}_{\rm{a}}}\) of acetic acid and \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonium hydroxide are 4.76 each. The \(\mathrm{pH}\) of ammonium acetate is
1 7
2 less than 7
3 more than 7
4 zero
Explanation:
\(\mathrm{pH}\) of a salt of weak acid and weak base is \(\begin{aligned}\mathrm{pH} & =7+\dfrac{1}{2} \mathrm{p}_{\mathrm{a}}-\dfrac{1}{\mathrm{p}} \mathrm{K}_{\mathrm{b}} \\\mathrm{pH} & =7+\dfrac{1}{2} \times 4.76-\dfrac{1}{2} \times 4.76=7\end{aligned}\)
CHXI07:EQUILIBRIUM
314741
A weak acid with \({\text{p}}{{\text{K}}_{\text{a}}}\,\,5.9\) and weak base with \({\text{p}}{{\text{K}}_{\text{b}}}\,\,5.8\) are mixed in equal proportions. \(\mathrm{pH}\) of the resulting solution is
1 7
2 7.05
3 7.005
4 7.5
Explanation:
For salts of weak acid and weak base, \(\begin{aligned}& \quad \mathrm{pH}=7+\dfrac{1}{2}\left(\mathrm{pk}_{\mathrm{a}}-\mathrm{pk}_{\mathrm{b}}\right) \\& =7+\dfrac{1}{2}(5.9-5.8) \\& =7.05\end{aligned}\)
KCET - 2023
CHXI07:EQUILIBRIUM
314742
Which of the following statements is/are true?
1 Weaker the acid, greater will be hydrolysis of its anion
2 Weaker the base, greater will be hydrolysis of its cation
314744
Which among the following salt solution in water shows \(\mathrm{pH}\) greater than 7 ?
1 sodium acetate
2 sodium sulphate
3 copper sulphate
4 Ammonium chloride
Explanation:
Sodium acetate is a salt of weak acid and strong base. Therefore, it is basic in nature with \(\mathrm{pH}\) greater than 7. \(\mathrm{Na}_{2} \mathrm{SO}_{4}, \mathrm{pH}=7 ; \mathrm{CuSO}_{4}, \mathrm{pH}\) is less than 7; \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{pH}\) is less than 7 .
MHTCET - 2021
CHXI07:EQUILIBRIUM
314745
The formula to find \(\mathrm{pH}\) of the aqueous solution of an amphoteric salt \(\mathrm{NaHS}\) is
\(\mathrm {\mathrm{pH}}\) of aqueous solution of an amphoteric salt is equal to the average of the \({\text{pKa}}\) of the salt and its conjugate acid.
CHXI07:EQUILIBRIUM
314732
If \({\rm{p}}{{\rm{K}}_{\rm{a}}}\) of acetic acid and \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonium hydroxide are 4.76 each. The \(\mathrm{pH}\) of ammonium acetate is
1 7
2 less than 7
3 more than 7
4 zero
Explanation:
\(\mathrm{pH}\) of a salt of weak acid and weak base is \(\begin{aligned}\mathrm{pH} & =7+\dfrac{1}{2} \mathrm{p}_{\mathrm{a}}-\dfrac{1}{\mathrm{p}} \mathrm{K}_{\mathrm{b}} \\\mathrm{pH} & =7+\dfrac{1}{2} \times 4.76-\dfrac{1}{2} \times 4.76=7\end{aligned}\)
CHXI07:EQUILIBRIUM
314741
A weak acid with \({\text{p}}{{\text{K}}_{\text{a}}}\,\,5.9\) and weak base with \({\text{p}}{{\text{K}}_{\text{b}}}\,\,5.8\) are mixed in equal proportions. \(\mathrm{pH}\) of the resulting solution is
1 7
2 7.05
3 7.005
4 7.5
Explanation:
For salts of weak acid and weak base, \(\begin{aligned}& \quad \mathrm{pH}=7+\dfrac{1}{2}\left(\mathrm{pk}_{\mathrm{a}}-\mathrm{pk}_{\mathrm{b}}\right) \\& =7+\dfrac{1}{2}(5.9-5.8) \\& =7.05\end{aligned}\)
KCET - 2023
CHXI07:EQUILIBRIUM
314742
Which of the following statements is/are true?
1 Weaker the acid, greater will be hydrolysis of its anion
2 Weaker the base, greater will be hydrolysis of its cation
314744
Which among the following salt solution in water shows \(\mathrm{pH}\) greater than 7 ?
1 sodium acetate
2 sodium sulphate
3 copper sulphate
4 Ammonium chloride
Explanation:
Sodium acetate is a salt of weak acid and strong base. Therefore, it is basic in nature with \(\mathrm{pH}\) greater than 7. \(\mathrm{Na}_{2} \mathrm{SO}_{4}, \mathrm{pH}=7 ; \mathrm{CuSO}_{4}, \mathrm{pH}\) is less than 7; \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{pH}\) is less than 7 .
MHTCET - 2021
CHXI07:EQUILIBRIUM
314745
The formula to find \(\mathrm{pH}\) of the aqueous solution of an amphoteric salt \(\mathrm{NaHS}\) is
\(\mathrm {\mathrm{pH}}\) of aqueous solution of an amphoteric salt is equal to the average of the \({\text{pKa}}\) of the salt and its conjugate acid.
CHXI07:EQUILIBRIUM
314732
If \({\rm{p}}{{\rm{K}}_{\rm{a}}}\) of acetic acid and \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonium hydroxide are 4.76 each. The \(\mathrm{pH}\) of ammonium acetate is
1 7
2 less than 7
3 more than 7
4 zero
Explanation:
\(\mathrm{pH}\) of a salt of weak acid and weak base is \(\begin{aligned}\mathrm{pH} & =7+\dfrac{1}{2} \mathrm{p}_{\mathrm{a}}-\dfrac{1}{\mathrm{p}} \mathrm{K}_{\mathrm{b}} \\\mathrm{pH} & =7+\dfrac{1}{2} \times 4.76-\dfrac{1}{2} \times 4.76=7\end{aligned}\)
CHXI07:EQUILIBRIUM
314741
A weak acid with \({\text{p}}{{\text{K}}_{\text{a}}}\,\,5.9\) and weak base with \({\text{p}}{{\text{K}}_{\text{b}}}\,\,5.8\) are mixed in equal proportions. \(\mathrm{pH}\) of the resulting solution is
1 7
2 7.05
3 7.005
4 7.5
Explanation:
For salts of weak acid and weak base, \(\begin{aligned}& \quad \mathrm{pH}=7+\dfrac{1}{2}\left(\mathrm{pk}_{\mathrm{a}}-\mathrm{pk}_{\mathrm{b}}\right) \\& =7+\dfrac{1}{2}(5.9-5.8) \\& =7.05\end{aligned}\)
KCET - 2023
CHXI07:EQUILIBRIUM
314742
Which of the following statements is/are true?
1 Weaker the acid, greater will be hydrolysis of its anion
2 Weaker the base, greater will be hydrolysis of its cation
314744
Which among the following salt solution in water shows \(\mathrm{pH}\) greater than 7 ?
1 sodium acetate
2 sodium sulphate
3 copper sulphate
4 Ammonium chloride
Explanation:
Sodium acetate is a salt of weak acid and strong base. Therefore, it is basic in nature with \(\mathrm{pH}\) greater than 7. \(\mathrm{Na}_{2} \mathrm{SO}_{4}, \mathrm{pH}=7 ; \mathrm{CuSO}_{4}, \mathrm{pH}\) is less than 7; \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{pH}\) is less than 7 .
MHTCET - 2021
CHXI07:EQUILIBRIUM
314745
The formula to find \(\mathrm{pH}\) of the aqueous solution of an amphoteric salt \(\mathrm{NaHS}\) is
\(\mathrm {\mathrm{pH}}\) of aqueous solution of an amphoteric salt is equal to the average of the \({\text{pKa}}\) of the salt and its conjugate acid.
CHXI07:EQUILIBRIUM
314732
If \({\rm{p}}{{\rm{K}}_{\rm{a}}}\) of acetic acid and \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonium hydroxide are 4.76 each. The \(\mathrm{pH}\) of ammonium acetate is
1 7
2 less than 7
3 more than 7
4 zero
Explanation:
\(\mathrm{pH}\) of a salt of weak acid and weak base is \(\begin{aligned}\mathrm{pH} & =7+\dfrac{1}{2} \mathrm{p}_{\mathrm{a}}-\dfrac{1}{\mathrm{p}} \mathrm{K}_{\mathrm{b}} \\\mathrm{pH} & =7+\dfrac{1}{2} \times 4.76-\dfrac{1}{2} \times 4.76=7\end{aligned}\)
CHXI07:EQUILIBRIUM
314741
A weak acid with \({\text{p}}{{\text{K}}_{\text{a}}}\,\,5.9\) and weak base with \({\text{p}}{{\text{K}}_{\text{b}}}\,\,5.8\) are mixed in equal proportions. \(\mathrm{pH}\) of the resulting solution is
1 7
2 7.05
3 7.005
4 7.5
Explanation:
For salts of weak acid and weak base, \(\begin{aligned}& \quad \mathrm{pH}=7+\dfrac{1}{2}\left(\mathrm{pk}_{\mathrm{a}}-\mathrm{pk}_{\mathrm{b}}\right) \\& =7+\dfrac{1}{2}(5.9-5.8) \\& =7.05\end{aligned}\)
KCET - 2023
CHXI07:EQUILIBRIUM
314742
Which of the following statements is/are true?
1 Weaker the acid, greater will be hydrolysis of its anion
2 Weaker the base, greater will be hydrolysis of its cation
314744
Which among the following salt solution in water shows \(\mathrm{pH}\) greater than 7 ?
1 sodium acetate
2 sodium sulphate
3 copper sulphate
4 Ammonium chloride
Explanation:
Sodium acetate is a salt of weak acid and strong base. Therefore, it is basic in nature with \(\mathrm{pH}\) greater than 7. \(\mathrm{Na}_{2} \mathrm{SO}_{4}, \mathrm{pH}=7 ; \mathrm{CuSO}_{4}, \mathrm{pH}\) is less than 7; \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{pH}\) is less than 7 .
MHTCET - 2021
CHXI07:EQUILIBRIUM
314745
The formula to find \(\mathrm{pH}\) of the aqueous solution of an amphoteric salt \(\mathrm{NaHS}\) is
\(\mathrm {\mathrm{pH}}\) of aqueous solution of an amphoteric salt is equal to the average of the \({\text{pKa}}\) of the salt and its conjugate acid.
CHXI07:EQUILIBRIUM
314732
If \({\rm{p}}{{\rm{K}}_{\rm{a}}}\) of acetic acid and \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonium hydroxide are 4.76 each. The \(\mathrm{pH}\) of ammonium acetate is
1 7
2 less than 7
3 more than 7
4 zero
Explanation:
\(\mathrm{pH}\) of a salt of weak acid and weak base is \(\begin{aligned}\mathrm{pH} & =7+\dfrac{1}{2} \mathrm{p}_{\mathrm{a}}-\dfrac{1}{\mathrm{p}} \mathrm{K}_{\mathrm{b}} \\\mathrm{pH} & =7+\dfrac{1}{2} \times 4.76-\dfrac{1}{2} \times 4.76=7\end{aligned}\)
CHXI07:EQUILIBRIUM
314741
A weak acid with \({\text{p}}{{\text{K}}_{\text{a}}}\,\,5.9\) and weak base with \({\text{p}}{{\text{K}}_{\text{b}}}\,\,5.8\) are mixed in equal proportions. \(\mathrm{pH}\) of the resulting solution is
1 7
2 7.05
3 7.005
4 7.5
Explanation:
For salts of weak acid and weak base, \(\begin{aligned}& \quad \mathrm{pH}=7+\dfrac{1}{2}\left(\mathrm{pk}_{\mathrm{a}}-\mathrm{pk}_{\mathrm{b}}\right) \\& =7+\dfrac{1}{2}(5.9-5.8) \\& =7.05\end{aligned}\)
KCET - 2023
CHXI07:EQUILIBRIUM
314742
Which of the following statements is/are true?
1 Weaker the acid, greater will be hydrolysis of its anion
2 Weaker the base, greater will be hydrolysis of its cation
