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The pH of an acidic buffer mixture is:...

The `pH` of an acidic buffer mixture is:

A

` gt 7`

B

` lt 7`

C

`=7`

D

depends upon `K_(a)` of acid

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The correct Answer is:
d
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The pH of basic buffer mixtures is given by : pH=pK_(a)+log((["Base"])/(["Salt"])) , whereas pH of acidic buffer mixtures is given by: pH= pK_(a)+log((["Salt"])/(["Acid"])) . Addition of little acid or base although shows no appreciable change for all practical purpose, but since the ratio (["Base"])/(["Salt"]) or (["Salt"])/(["Acid"]) change, a slight decrease or increase in pH results in. A solution containing 0.2 mole of dichloroacetic acid (K_(a)=5xx10^(-2)) and 0.1 mole sodium dichloroacetate in one litre solution has [H^(+)] :

The pH of basic buffer mixtures is given by : pH=pK_(a)+log((["Base"])/(["Salt"])) , whereas pH of acidic buffer mixtures is given by: pH= pK_(a)+log((["Salt"])/(["Acid"])) . Addition of little acid or base although shows no appreciable change for all practical purpose, but since the ratio (["Base"])/(["Salt"]) or (["Salt"])/(["Acid"]) change, a slight decrease or increase in pH results in. A weak acid HA after treatment with 12 mL of 0.1M strong base BOH has a pH=5 . At end point, the volume of same base required is 26.6mL K_(a) of acid is:

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GRB PUBLICATION-IONIC EQUILIBRIUM-All Questions
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  2. 50 mL of 2N acetic acid mixed with 10 mL of 1N sodium acetate solution...

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  3. The pH of an acidic buffer mixture is:

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  5. pH of a mixture containing 0.10 M X^(-) and 0.20 M HX is: [pK(b)(X^(-)...

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  6. The composition of an acidic buffer mixture made up of HA and NaA of t...

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  7. Blood is buffered with CO(2) " and " HCO(3)^(-). What is the ratio of ...

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  10. To the solution of a weak monobasic acid whose pH was 3, some amount o...

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  12. 0.5 L of 0.5 M CH(3)COOH and 0.5 L of 0.25 M CH(3)COONa are available....

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  13. Which of the following solution will exhibit the least change in pH on...

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  14. A solution containing 0.1" mole" //L HN(3) and 0.2 " mol "//L NaN(3) h...

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  15. A buffer solution is made by mixing a weak acid HA (K(a) =10^(-6)) wit...

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  16. Determine the pOH of a solution after 0.1 mole of NaOH is added to 1 l...

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  17. Buffer capacity of a buffer solution is x, the volume of 1 M NaOH adde...

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  18. Which of the following salt solution may have pH=7 at 60^(@)C ?

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  19. pH when solution containing HA (K(a)=10^(-6)) and NaA show maximum buf...

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  20. Which pair of solutes could be used to prepare an aqueous buffer solut...

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