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The toxic compound 2,4-dinitrophenol has...

The toxic compound 2,4-dinitrophenol has `K_(a)=10^(-4).` In an experiment, a buffer solution of 2,4-dinitrophenol was prepared with the pH adjusted to 5. Calculate the ratio of the concentrations of the dissociated ion to the undissociated acid:

A

`0.01`

B

`0.1`

C

10

D

100

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NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Exercise
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  2. What is the pH of a solution of 0.28 M acid and 0.84 M of its conjugat...

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  3. The toxic compound 2,4-dinitrophenol has K(a)=10^(-4). In an experimen...

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  4. Equilibrium constant for the following reaction is 1xx10^(-9) : C(5)...

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

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  6. The acid dissociation constant of uric acid is K(a)=4.0xx10^(-6) M. Th...

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  7. CH(3)NH(2) (0.12 mole, pK(b)=3.3) is added to 0.08 moles of HCl and th...

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  8. An aqueous solution at room temperature contains 0.1 M NH(4)Cl and 0.0...

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  9. A 1L solution contains 0.2M NH(4)OH and 0.2M NH(4)Cl. If 1.0 mL of 0.0...

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  10. 0.1 M formic acid solution is titrated against 0.1 M NaOH solution. Wh...

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  11. The total number of different kind of buffers obtained during the titr...

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  12. A buffer solution is made up of acetic acid [pK(a)=5] having conc.=1.5...

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  13. The pH of a solution of 0.10 M CH(3)COOH increases when which of the f...

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

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  15. pK(a) of NH(4)^(+) is 9.26. Hence, effective range for NH(4)OH-NH(4)Cl...

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  16. 1.0 L solution is prepared by mixing 61 g benzoic acid (pK(a)=4.2) wit...

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  17. The pH of a solution containing 0.4 M HCO(3)^(-) and 0.2 M CO(3)^(2-) ...

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  18. The pH of the resultant solution of 20 mL of 0.1 M H(3)PO(4) and 20 mL...

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  19. The graph represents the titration curve for :

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  20. When 100 mL of 0.1 M NaCN solution is titrated with 0.1 M HCl solution...

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