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At 80 ^(@ ) C , pure distilled water ...

At ` 80 ^(@ ) C ,` pure distilled water has `[H_3O^(+) ]= 1 xx 10 ^(-6) " mol " L^(-1) ` The value of `K_w` at this temperature will be

A

`1*10^-8`

B

`1*10^-14`

C

`1*10^-12`

D

`1*10^-7`

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-MOCK TEST 13-Exercise
  1. The dissociation constant of an acid, HA is 1 x 10^-5 The pH of 0.1 M ...

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  2. 100 mL of 0.01 M solution of NaOH is diluted to 1 litre. The pH of res...

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  3. At 80 ^(@ ) C , pure distilled water has [H3O^(+) ]= 1 xx 10 ^(-6) ...

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  4. The pH of a solution obtained by mixing 50 mL of 2N HCI and 50 mL of 1...

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  5. The pH of a solution increased from 3 to 6. Its [H^(o+)] will be

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  6. Ionic product of water increases, if

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  7. The hydrogen ion concentration of 0.1 M solution of acetic acid, which...

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  8. A monobasic weak acid solution which is 0.002 M has pH value equal to ...

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  9. In which of the following the solubility of AgCl will be minimum ?

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  10. If the solubility of Mg(OH)2 in water is S mol L^-1 then its Ksp will ...

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  11. Aqueous solution of sodium acetate is

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  12. An acidic buffer solution can be prepared by mixing the solutions of

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  13. Degree hydrolysis (h) of a salt of weak acid and a strong base is give...

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  14. The pH of a solution at 25°C containing 0.20 M sodium acetate and 0.06...

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  15. The pH of 0.2 M aqueous solution of NH4Cl will be (pKb of NH4OH = 4.7...

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  16. On adding ammonium chloride to a solution ammonium hydroxide

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  17. Aqueous solution of which salt will not be hydrolysed?

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  18. If K(sp) for HgSO(4) is 6.4xx10^(-5), then solubility of this substanc...

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  19. pH of 0.5 M aqueous NaCN solution is (pKa of HCN = 9.3, log 5 = 0.7)

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  20. Calculate the pH of an aqueous solution of 1.0M ammonium formate assum...

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