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The pH values of aqueous solutions of wh...

The `pH` values of aqueous solutions of which of the following compounds does not change on dilution?

A

`PhCOONH_(4)`

B

`NH_(4)CN`

C

`HCOONa`

D

`NH_(4)CI`

Text Solution

Verified by Experts

The correct Answer is:
A, B
Either buffer or salt of `W_(A)//W_(B)` solutions `pH` values does not change on dilution.
Since in buffer, on dilution both the concentration of `W_(A)` or `W_(B)`and their conjugate ions change, but their ratio remains same.
Hydrolysis of salts of `W_(A)//W_(B)` are independent on the concentration, so theit `pH` values also does not change on dilution.
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  6. The pH values of aqueous solutions of which of the following compounds...

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  7. In H(3)PO(4) which of the following is true?

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  8. The degree fo hydrolysis for a salt of strong acid and weak base

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  9. A solution containing a mixture of 0.05M NaCI and 0.05M Nal is taken. ...

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  10. Which of the following is(are) correct when 0.1L of 0.0015M MgCI(2) an...

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  13. A solution is prepared by dissolving 1.5g of a monoacidic base into 1....

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  14. A solution of 0.01M Fe^(2+) in a saturated H(2)S solution and (i) 0.2M...

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  15. Which statements is//are correct?

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  16. Which statements is//are correct?

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  17. Which of the following solution will have pH = 13?

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  18. Which of the following statements (s) is (are) correct?

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  19. The pH of 0.1M solution of the following salts decreases in the order

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  20. A buffer solution can be prepared from a mixture of

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