Class 10 Quiz Level 3 (Difficult) – Acids, Bases and Salt

Total questions: 10

Using the Henderson-Hasselbalch equation ,calculate the pH of a buffer solution containing 0.1 M acetic acid and 0.1 M sodium acetate (pKa of acetic acid is 4.76).

Topic: Henderson-Hasselbalch equation

Deselect Answer

3.76

4.76

6.76

5.76

None

In a titration experiment , 25.0 mL of 0.1 M HCL is completely neutralized by 30.0 mL of NaOH solution . What is the concentration of the NaOH solution ?

Topic: Titration

Deselect Answer

0.083 M

0.125 M

0.167 M

0.200 M

None

Which salt will hydrolyze to form an acidic solution ?

Topic: Hydrolysis Of Salts

Deselect Answer

$ \displaystyle N{{a}_{2}}HS{{O}_{4}}$

$ \displaystyle KCl $

$ \displaystyle NaHC{{O}_{3}}$

$\displaystyle N{{H}_{4}}N{{O}_{3}}$

None

What is the solubility product constant (Ksp) expression for calcium fluoride ,$ \displaystyle Ca{{F}_{2}}$ ?

Topic: Solubility Product

Deselect Answer

$ \displaystyle {{K}_{{sp}}}=\left[ {c{{a}^{{2+}}}} \right]\left[ {{{F}^{-}}} \right]$

$\displaystyle {{K}_{{sp}}}=\left[ {c{{a}^{{2+}}}} \right]{{\left[ {{{F}^{-}}} \right]}^{2}}$

$ \displaystyle {{K}_{{sp}}}={{\left[ {c{{a}^{{2+}}}} \right]}^{2}}\left[ {{{F}^{-}}} \right]$

$\displaystyle {{K}_{{sp}}}={{\left[ {c{{a}^{{2+}}}} \right]}^{2}}{{\left[ {{{F}^{-}}} \right]}^{2}}$

None

Which of the following is a Lewis acid?

Topic: Lewis Acid And Bases

Deselect Answer

$ \displaystyle N{{H}_{3}}$

$ \displaystyle {O{{H}^{-}}}$

$ \displaystyle B{{F}_{3}}$

$ \displaystyle {{H}_{2}}O$

None

The solubility product (Ksp) of AgCI is $ \displaystyle 1.8\times {{10}^{{-10}}}.$ What is the solubility of AgCI in water?

Topic: Solubility Product

Deselect Answer

$ \displaystyle 1.3\times {{10}^{{-5}}}M$

$ \displaystyle 1.8\times {{10}^{{-5}}}M$

$ \displaystyle 2.7\times {{10}^{{-5}}}M$

$ \displaystyle 3.6\times {{10}^{{-5}}}M$

None

Which of the following indicators would be best suited for a titration between a week base and a strong acid?

Topic: Acid-Base Indicators

Deselect Answer

Phenolphthalein

Methyl orange

Bromothymol blue

Litmus

None

Calculate the hydrolysis constant $ \displaystyle \text{(}{{\text{K}}_{h}})$ for the acetate ion if $ \displaystyle {{\text{K}}_{w}}\,\text{is }1.0\times {{10}^{{-14}}}$ $ \displaystyle {{{K}_{a}}}$ for acetic acid is $ \displaystyle 1.8\times {{10}^{{-5}}}$.

Topic: Hydrolysis Constant

Deselect Answer

$ \displaystyle 1.8\times {{10}^{{-9}}}$

$ \displaystyle 5.6\times {{10}^{{-10}}}$

$ \displaystyle 5.6\times {{10}^{{-12}}}$

$ \displaystyle 1.0\times {{10}^{{-14}}}$

None

Which of the following salts, when dissolved in water, will produce a basic solution?

Topic: Hydrolysis Of Salts

Deselect Answer

$ \displaystyle \text{N}{{\text{H}}_{4}}\text{Cl}$

$ \displaystyle \text{N}{{\text{a}}_{2}}\text{C}{{\text{O}}_{3}}$

$ \displaystyle \text{KN}{{\text{O}}_{3}}$

$ \displaystyle \text{N}{{\text{a}}_{2}}\text{S}{{\text{O}}_{4}}$

None

10.

Which of the following salts will hydrolyze to form a basic solution?

Topic: Hydrolysis Of Salts

Deselect Answer

$ \displaystyle \text{NaCl}$

$ \displaystyle {{\text{K}}_{2}}\text{S}{{\text{O}}_{4}}$

$ \displaystyle \text{NaHC}{{\text{O}}_{3}}$

$ \displaystyle \text{N}{{\text{H}}_{4}}\text{N}{{\text{O}}_{5}}$

None

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Class 10 Quiz Level 3 (Difficult) – Acids, Bases and Salt

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