EASY

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A solution was prepared by mixing $50 mL$ of $0.2 M HCl$ and $50 mL$ of $0.1 M NaOH$ . The $pH$ of the solution is

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Important Questions on Equilibrium

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Following solutions were prepared by mixing different volumes of

NaOH

and

HCl

of different concentrations.

(i)

60 mL \frac{M}{10} HCl + 40 mL \frac{M}{10} NaOH

(ii)

55 mL \frac{M}{10} HCl + 45 mL \frac{M}{10} NaOH

(iii)

75 mL \frac{M}{5} HCl + 25 mL \frac{M}{5} NaOH

(iv)

100 mL \frac{M}{10} HCl + 100 mL \frac{M}{10} NaOH

The

pH

of which one of them will be equal to

1

HARD

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

The

pH

of a solution obtained by mixing

50 mL

1 M HCl

and

30 mL

1 M NaOH

x \times 10^{- 4} .

The value of

x

is (Nearest integer)

[\log 2.5 = 0.3979]

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

200 mL

0.01 MHCl

is mixed with

400 mL

0.01 {MH}_{2} {SO}_{4}

. The

pH

of the mixture is

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

What is the pH of the resulting solution when equal volumes of

0.1

M NaOH and

0.01

M HCl are mixed?

EASY

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

The number of

H^{+}

ions present in

1 mL

of a solution whose

pH

13

HARD

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Two solutions,

A

and

B,

each of

100 L

was made by dissolving

4 g

N a O H

and

9.8 g

H_{2} S O_{4}

in water, respectively. The

p H

of the resultant solution obtained from mixing

40 L

of solution

A

and

10 L

of solution

B

is ____________.

(\log 2 = 0.3)

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

p^{H}

value of

0.001 MNaOH

solution is

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

The hydroxyl ion concentration in a solution having

pH

value

3

will be

EASY

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

The solution having highest

pH

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

An acid solution of

pH = 6

is diluted

1000

times. The

pH

of the final solution becomes

HARD

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Consider the following statements

(a)

The pH of a mixture containing

400 m L

0.1 M H_{2} S O_{4}

and

400 m L

0.1 M N a O H

will be approximately

1.3 .

(b)

Ionic product of water is temperature dependent.

(c)

A monobasic acid with

K_{a} = 10^{- 5}

has a

p H = 5

. The degree of dissociation of this acid is

50 %

(d)

The Le Chatelier's principle is not applicable to common-ion effect.
The correct statements are:

EASY

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Arrange the following solutions in the decreasing order of pOH :
(A)

0.01 MHCl

(B)

0.01 MNaOH

(C)

0.01 {MCH}_{3} COONa

(D)

0.01 MNaCl

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Given

pH

of a solution

' A'

' 3'

and it is mixed with another solution

' B'

having

pH

' 2'

. If both solutions are mixed, the resultant

pH

of the solution will be (Assume concentration and volume remain unchanged after mixing of individual solution)

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Which of the following solution will have

pH

close to

1.0

HARD

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Calculate the ratio of

{HCOO}^{-}

and

F^{-}

in a mixture of

0.2 M HCOOH (Ka = 2 \times 10^{- 4})

and

0.1 M HF (Ka = 6.6 \times 10^{- 4})

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

50 mL

solution of strong acid of

pH = 1

is mixed with a

50 ml

solution of strong acid of

pH = 2

. The

pH

of the mixture will be nearly

(\log 5.5 = 0.74)

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

Determine the

pH

value of a solution obtained by mixing

25 mL

0.2 M HCl

and

50 mL

0.25 N NaOH

solutions.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

The pH of the solution

5 ml \frac{M}{5} HCl + 10 mL of \frac{M}{10} NaOH

HARD

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

10 mL of 0.1 M

tribasic acid

H_{3} A

is titrated with

0.1 M NaOH

solution. What is the ratio of

\frac{[H_{3} A]}{[A^{3 -}]}

2^{nd}

equivalence point?

[Given : K_{a_{1}} = 10^{- 3}, K_{a_{2}} = 10^{- 8} and K_{a_{3}} = 10^{- 12}]

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Calculation of pH of Various Solutions

What will be the resultant

pH

when

200 mL

of an aqueous solution of

HCl (pH = 2.0)

is mixed with

300 mL

of an aqueous solution of

NaOH (pH = 12)

A solution was prepared by mixing 50 mL of 0.2 M HCl and 50 mL of 0.1 M NaOH. The pH of the solution is

Important Questions on Equilibrium

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A solution was prepared by mixing $50 mL$ of $0.2 M HCl$ and $50 mL$ of $0.1 M NaOH$ . The $pH$ of the solution is