Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 48

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Earn 100

The solubility of a certain sparingly soluble substance ${MX}_{n}$ is nearly $1.4 \times 10^{- 4} M$ . If the solubility product is $1.1 \times 10^{11},$ what is the value of $n$ ?

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Important Questions on Equilibrium

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 49

The concentration of

{Mg}^{2 +}

in the solution made by mixing

10 mL of 0.25 M Mg {({NO}_{3})}_{2}

and

25 mL

of

0.2 M NaF

will be

(K_{sp} {MgF}_{2} = 8 \times 10^{- 8})

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 50

The

pH

of a saturated solution of

Mg ({OH}_{2})

in water will be

(K_{SP} = - 4 \times 10^{- 12})

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 51

When

NaCI

is added to the reaction mixture of an oil and caustic soda, the soap is thrown out because-

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 52

16.6 mg

of solid silver chromate

(molr mass = 332)

when put into

500 mL

water, silver ion and chromate ion are obtained. On adding more solid, the concentration of ions does not increase. If

100 mg

of solid is put into

2

Litre of water, then the amount of solid remained undissociated would be-

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 53

In the system

{CaF}_{2} (s) ⇌ {Ca}^{+ 2} (aq) + 2 F^{-}

increasing the concentration of

{Ca}^{2 +} ions 4

times will cause the equilibrium concentration of

F

inos to chenge to... theimes the intial value

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 54

At

25 ° C,

the solubility product values of

AgCl and AgCNS

are

1.7 \times 10^{- 10} and 1.0 \times 10^{- 12}

respectively. When water is saturated with both solids, calculate the ratio

[{Cl}^{-}] / [{CNS}^{-}]

and also

[{Ag}^{+}]

in the solution.

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 55

When pure water is saturated with

{CaCO}_{3} and {CaC}_{2} O_{4}

, the concentration of calcium ion in the solution under equilibrium is

8.426 \times 10^{- 5} M

. If the ratio of the solubility product

{CaCO}_{3}

to that of

{CaC}_{2} O_{4}

is

2.087,

what is the solubility product of

{CaCO}_{3}

in pure eater?

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-1>Q 56

The solubility of

{Ag}_{2} {CO}_{3}

in water at

25 ° C

is

1 \times 10^{- 4}

mole/litre. What is its solubility in

0.1 M {Na}_{2} {CO}_{3}

solution? Assume on hydrolysis of

{CO}_{3}^{2 -} ion

.