Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 79

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The slightly soluble ${Ag}_{2} {CrO}_{4}$ is expected to be more soluble in:

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Important Questions on Equilibrium

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 80

Pure water is saturated with a sparingly soluble salt,

{PbI}_{2}

which has a solubility product

K_{sp}

. In this saturated solution-

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 83

Calculate the

pH

of a solution made by mixing

150 {cm}^{3}

of

0.10 M {CH}_{3} COONa

and

250 {cm}^{3}

of

0.10 M

{CH}_{3} COOH . [K_{a}

of

{CH}_{3} COOH = 1.8 \times 10^{- 5}]

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 84

The solubility product constant,

K_{sp}

of

{Ag}_{3} {PO}_{4}

is

1.8 \times 10^{- 18} .

What is the molar solubility of

{Ag}_{3} {PO}_{4}

in Water? (Neglect any hydrolysis)

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 85

If each of the following salts has

K_{sp} = 1 \times 10^{- 9},

which of them is the least soluble in water?

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 86

The

pH

a

0.01 M

solution of ammonium acetate can be changed by changing:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 88

The

pH

of mixture of

100 mL

of

0.25 N HCl

and

100 mL

of

0.125 N NaOH

is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 89

{CaF}_{2}

(Mol. Wt. =

78

) has a solubility of

1.6 \times 10^{- 2} {gdm}^{- 3}

at

293 K

. The solubility product of

{CaF}_{2}

, is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-4>Q 90

Which of these mixtures constitute buffer solutions?

Mixture $1 : 25 mL$ of $0.10 M {HNO}_{3}$ and $25 ml$ of $0.10 M {NaNO}_{3}$
Mixture $2 : 25 mL$ $0.10 M {HC}_{2} H_{3} O_{2}$ of and $25 mL$ of $0.10 M NaOH$