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Byju's Answer

Standard XII

Chemistry

pH the Power of H

On adding equ...

Question

On adding equal amount of $H C l$ and $C_{2} H_{5} O H$ to water, the $p H$ of the solution will:

increase

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decrease

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remains constant

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none of these

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Solution

The correct option is C decrease
$H C l$ is a strong acid with $p H$ of $3.$
Ethanol is slightly basic with a $p H$ of $7.33$
So if we add equal amount of both to water the $p H$ will reduce.

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Similar questions

Q. The

p H

of a

10 m l

aqueous solution of

H C l

4

. The amount of water to be added to this solution in order to change its

p H

from

4

5

is?

Q. An amount of 35.67 mg HCl is added to distilled water and the total solution volume is made to one litre. The atomic weights of H and Cl are 1 and 35.5, respectively. Neglecting the dissociation of water, the pH of the solution, is

150

mL of

C_{2} H_{5} O H

(density

= 0.78 g m L^{- 1}

) is diluted to one litre by adding water; molarity of the solution is:

Q. How much water should be added to

1 L

of an aqueous solution of HCl having

p H = 1

to prepare a solution having

p H = 2

Q. The

p H

of pure water at

25^{o} C

and

60^{o} C

are

7

and

6.5

respectively.

H C l

gas is passed through water at

25^{o} C

till the resulting

1

litre solution which aquires a

p H

3

. Now

4 \times 10^{- 3}

mole of

N a C N

are added into this solution. Also a fresh

0.1 M

H C N

solution has

p H

5.1936

. Now in the one part of solution obtained after addition of

N a C N

, one milli mole of

N a O H

are added and in the second part of this solution

0.5

miili mole of

H C l

are added.

The dissociation constant of

H C N

is:

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On adding equal amount of HCl and C2H5OH to water, the pH of the solution will:

The correct option is C decreaseHCl is a strong acid with pH of 3.Ethanol is slightly basic with a pH of 7.33So if we add equal amount of both to water the pH will reduce.

On adding equal amount of $H C l$ and $C_{2} H_{5} O H$ to water, the $p H$ of the solution will:

The correct option is C decrease
$H C l$ is a strong acid with $p H$ of $3.$
Ethanol is slightly basic with a $p H$ of $7.33$
So if we add equal amount of both to water the $p H$ will reduce.