Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 153

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The solubility product constant $K_{sp}$ of $Mg (OH)_{2}$ is $9.0 \times 10^{- 12}$ . If a solution is $0.010 M$ with respect to ${Mg}^{2 +}$ ion, what is the maximum hydroxide ion concentration which could be present without causing the precipitation of $Mg (OH)_{2}$

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Important Questions on Equilibrium

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 154

When $HCl$ gas is passed through a saturated solution of common salt, pure $NaCl$ is precipitated because

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 159

The solubility product of hydroxides of

{Mg}^{+ 2}, {Zn}^{+ 2}

and

{Fe}^{+ 3}

decreases as

K_{sp} Mg (OH)_{2} > K_{sp} Zn (OH)_{2} > K_{sp} Fe (OH)_{3}

. The order of precipitation of hydroxides is:-

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 160

Two monobasic weak acids have the same concentration of

H^{+}

ions. What is the relationship between dissociation constant and dilution:

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 162

pH

of water is

7

. When a substance

Y

is dissolved in water, the

pH

becomes

13

. The substance

Y

is a salt of

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 169

1 0^{- 6} M H C l

is diluted to 100 times. Its

p H

is

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 172

The

pH

of a solution is increased from

3

to

6

; its

H^{+}

ion concentration will be

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 174

Which of the following statements are (is) correct:
(a) The

pH

of

1.0 \times 10^{- 8} M

solution of

HCl

is

8

.
(b) The conjugate base of

H_{2} {PO}_{4}^{-}

is

{HPO}_{4}^{2 -}

(c) Autoprotolysis constant of water increases with temperature.
(d) When a solution of a weak monoprotic acid is titrated against a strong base, at half neutralization point

pH = 1 / 2 pKa

.

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Beta Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>EXERCISE-I (Conceptual Questions)>Q 175

In a solution of pH = 5, more acid is added in order to reduce the pH = 2. The increase in hydrogen ion concentration is