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Byju's Answer

Standard XII

Chemistry

pH the Power of H

A Value of ...

Question

A) Value of $K_{w}$ is independent of temperature.
B) $p^{H}$ of the solution cannot be zero.
C) $p^{O H} = 14 - p^{H}$ is always correct at $90^{\circ} C$ .

All are correct

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B only is correct

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B only wrong

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All are wrong

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Solution

The correct option is D All are wrong
A) kw is lemp dependent and it increases with increase in temperature.
$B) p^{H} o f [H^{+}]$ of 1M is zero.
$C) p^{O H} = 14 - p^{H}$ is always correct at $25^{o}$ C.
Therefore all are wrong.

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Similar questions

Q. Adult frogs have
A. lungs
B. gills
C. lenticels
D. spiracles

(a) only B is correct
(b) both B and D are correct
(c) only A is correct
(d) B, C, and D are correct

Q. The correct statements among the following:

a) At

25^{\circ} C

, pH = pOH = 7

b) pH of an acid solution always less than 7 at

25^{\circ} C

c) pH of 0.001 M

C H_{3} C O O H

solution is equal to 3 at

25^{\circ} C

d) pH of 0.05 M

H_{2} S O_{4}

is equal to pH of 0.1 M H Cl solution

Q. '

A

' solution of strong acid/strong base of

p H = x

is mixed with equal volume of '

B

' solution of strong acid/strong base of

p H = (14 - x)

, such that the resulting mixture has a

p H = 7

. If only natural number values of

x

are allowed, excluding

x = 7

, then how many possible values of

x

would be there? (Negative values of

p H

are not to be considered)

Q. 2-chloropropane can be prepared by different methods:
First method:

C H_{3} - C | O H H - C H_{3} K C l - - \to

Second method:

C H_{3} - C H = C H_{2} C l_{2} + H_{2} O - ----- \to

Third method:

C H_{3} - C | O H H - C H_{3} S O C l_{2} - ---- \to p y r i d i n e

Q. 1 ml of

10^{- 5}

M HCl solution is diluted to 1000 ml. Then the pH of the diluted solution is :

(K_{w} = 10^{- 14} a n d l o g (10.5) = 1.02

) (Consider only two points after decimal.)

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A) Value of Kw is independent of temperature.B) pH of the solution cannot be zero.C) pOH=14−pH is always correct at 90∘C.

The correct option is D All are wrongA) kw is lemp dependent and it increases with increase in temperature.B)pHof[H+] of 1M is zero.C)pOH=14−pH is always correct at 25oC.Therefore all are wrong.

A) Value of $K_{w}$ is independent of temperature.
B) $p^{H}$ of the solution cannot be zero.
C) $p^{O H} = 14 - p^{H}$ is always correct at $90^{\circ} C$ .

The correct option is D All are wrong
A) kw is lemp dependent and it increases with increase in temperature.
$B) p^{H} o f [H^{+}]$ of 1M is zero.
$C) p^{O H} = 14 - p^{H}$ is always correct at $25^{o}$ C.
Therefore all are wrong.