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Electrolysis and Electrolytes

24. Find the ...

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24. Find the pH of the solution formed by addition of 3.65g of HCL and 40g of NaOH.

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p H

of a solution formed by mixing

40

0.10 M

H C l

10

0.45 M

N a O H

Q. Equal volumes of two solutions containing

3.65 g m s

H C l

4.0 g m s

N a O H

respectively are mixed. The

p H

of the mixture is:

20

c m^{3}

x

M solution of HCl is exactly neutralised by

40

c m^{3}

0.05 M N a O H

solution, the pH of

H C l

Q. One litre of a buffer solution is prepared by dissolving

0.6

{N H}_{3}

0.4

{N H}_{4} C l

. What is the pH of the solution? for

{N H}_{3}

K_{b} = 1.85 \times 10^{- 5}

.
(i) What is the pH of the buffer after addition of

0.1

H C l

.
(ii) What is the pH of the buffer after addition of

0.1

N a O H

Q. Calculate the pH of a solution prepared by mixing 2.0 ml of a strong acid

(H C l)

solution of pH 3.0 and 2.0 ml of a strong base

(N a O H)

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