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pOH=7-0.5pKa+0.5 pKb is true for aqueous...

`pOH=7-0.5pK_a+0.5 pK_b` is true for aqueous solution containing which pair of cation and anion :

A

`C_(6)H_(5)NH_(3)^(+), CH_(3) COO^(-)`

B

`Na^(+), CN`

C

`Al^(3+), Cl^(-)`

D

`NH_(4)^(+), NO_(3)^(-)`

Text Solution

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The correct Answer is:
A
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MOTION-IONIC EQUILIBRUIM-Exercise -1
  1. What is the pH of an aqueous solution of ammonium acetate (Ka= Kb =1....

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  2. If pKb gt pKa then the solution of the salt of weak acid and weak base...

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  3. pOH=7-0.5pKa+0.5 pKb is true for aqueous solution containing which pai...

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  4. For a salt of weak acid and weak base [pKa- pKb] would be equal to –

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  5. Which of the following compound forms an aqueous solution which is aci...

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  6. The salt of which of the following four weak acids will be most hydrol...

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  7. Formula for degree of hydrolysis ‘h’, h =[10^(-7)(KaKb)^(-1/2)] is app...

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  8. H^(+) ion concentration of water does not change by adding:

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  9. Which of the following will produce a buffer sollution when mixed in e...

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  10. The pH of buffer of NH4OH + NH4Cl - type is given by -

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  11. A buffer solution can be prepared by mixing solution of:

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  12. Which one of the following mixture does not act as a buffer solution?

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  13. In the neutralization process of H3PO4 and NaOH, the number of buffers...

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  14. H(2)CO(3)+NaHCO(3) found in blood helps in maintaining pH of the blood...

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  15. pH range of colour change for methyl orange indicator is-

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  16. The colour of phenolphthalein in acid is-

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  17. Methyl orange is an example of :

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  18. Phenolphthalein is-

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  19. According to Modern quinoid theory the indicator used in acid-alkali t...

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  20. Phenolphthalein shows colour change in a definite pH range, which is-

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