Chemistry · JEE

Ionic equilibrium: Weak and strong electrolytes, ionization of electrolytes Mock Test for JEE

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Part of Equilibrium in JEE Main Chemistry.

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Q1ChemistryUnit 6: Equilibrium

In a mixture of acetic acid and sodium acetate, the ratio of concentrations of the salt to the acid is increased ten times. Then the

p H

of the solution:

Q2ChemistryUnit 6: Equilibrium

Which of the following are used as an antacid to reduce acidity in stomach?

Q3ChemistryUnit 6: Equilibrium

50 m L

0.2 M K O H

is added to

40 m L

0.5 M H C O O H .

The

p H

of the resulting solution is:

\left(\boldsymbol{K}_{\boldsymbol{a}}=\mathbf{1 . 8} \times \mathbf{1 0}^{-\mathbf{4}}\right)

Q4ChemistryUnit 6: Equilibrium

If the molar concentration of

\boldsymbol{P b I}_{2}

1.5 \times 10^{-3}

mol

L^{-1},

then the concentration of iodide ions of

g

ion

L^{-1}

is ?

Q5ChemistryUnit 6: Equilibrium

Which has the highest

p H ?

Q6ChemistryUnit 6: Equilibrium

Z n(O H)_{2}

is an amphoteric hydroxide which is involved in the following two equilibria existing simultaneously in aqueous solution.

\boldsymbol{Z n}(\boldsymbol{O} \boldsymbol{H})_{2}(\boldsymbol{s}) \rightleftharpoons \boldsymbol{Z} \boldsymbol{n}^{2+}(\boldsymbol{a} \boldsymbol{q})+

\mathbf{2 O H}^{-}(\boldsymbol{a q}) ; \boldsymbol{K}_{s p}=\mathbf{1 . 2} \times \mathbf{1 0}^{-\mathbf{1 7}}

\operatorname{Zn}(O H)_{2}(s)+2 O H^{-}(a q) \rightleftharpoons

\left[Z n(O H)_{4}\right]^{2-}(a q) ; K_{c}=0.12

At what

p H

the solubility of

Z n(O H)_{2}

will be minimum?

Q7ChemistryUnit 6: Equilibrium

Which of the following is an example of weak electrolyte?

Q8ChemistryUnit 6: Equilibrium

Assertion Hussain died turning blue in the body colour. Reason This is due to deficiency of oxygen.

Q9ChemistryUnit 6: Equilibrium

Aqueous solutions of

\boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3}, \boldsymbol{K} \boldsymbol{O} \boldsymbol{H}, \boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C O O H}

and

\boldsymbol{C H}_{3} \boldsymbol{C O O N a}

of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing are: This question has multiple correct options

Q10ChemistryUnit 6: Equilibrium

A strong acid will ionize in water while a weak acid will only ionize.

Q11ChemistryUnit 6: Equilibrium

Aqueous solutions of

\boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3}, \boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C O O H}

and

\boldsymbol{C H}_{3} \boldsymbol{C O O K}

of identical concentrations are given The pair(s) of the solution which may form a buffer upon mixing is(are): This question has multiple correct options

Q12ChemistryUnit 6: Equilibrium

Assertion Degree of hydrolysis and

p H

of a salt

\operatorname{say} N H_{4} C N

is independent of concentration of

\boldsymbol{N} \boldsymbol{H}_{4} \boldsymbol{C} \boldsymbol{N}

Reason The solution of

N H_{4} C N

in water has

\boldsymbol{p} \boldsymbol{H}

slightly greater than

\mathbf{7}

Q13ChemistryUnit 6: Equilibrium

Calculate the ratio of

H C O O^{-}

and

F^{-}

in a mixture of

0.2 M

HCOOH

\left(K_{a}=\right.

\left.2 \times 10^{-4}\right)

and

0.1 M H F\left(K_{a}=6.6 \times\right.

\left.10^{-4}\right)

Q14ChemistryUnit 6: Equilibrium

The pair whose both species are used in antacid medicinal preparation is:

Q15ChemistryUnit 6: Equilibrium

When

C a(O H)_{2}

attains solubility equilibrium, the:

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