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A student is asked to prepare a buffer s...

A student is asked to prepare a buffer solution with a pH of 4.00. This can be accomplished by using a solution containing which of the following ?

A

`HNO_2` only

B

HCN only

C

`HNO_2` and `NaNO_2`

D

HCN and NaCN

Text Solution

Verified by Experts

The correct Answer is:
c
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GRB PUBLICATION-IONIC EQUILIBRIUM-All Questions
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  2. HCOOH (aq) hArr H^+(aq) +HCOO^-(aq),Ka=1.7xx10^(-4) The ionization o...

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  5. 1 M benzoic acid (pKa=4.20) and 1 M C6H5COONa solutions are given sepa...

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  6. What is the difference in pH for 1//3 and 2//3 stages of neutralizatio...

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  7. To prepare a buffer of pH 8.26, amount of (NH(4))(2)SO(4) to be added ...

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  8. How many moles of NaOCI must be added to 150 mL of 0.025 MHOCI to obta...

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  9. 1 M NaCl and 1 M HCl are present in an aqueous solution. The solution ...

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  10. The pK(a) of a weak acid (HA) is 4.5. The pOH of an aqueous buffered s...

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  11. A buffer solution contains 1 mole of (NH(4))(2)SO(4) and 1 mole of NH(...

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  12. In which of the following combinations, is buffer action expected ? ...

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  13. Which solution is not a buffer solution ?

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  14. Which species has the lowest concentration in a solution prepared mixi...

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  15. Which may be added to one litre of water to act a buffer?

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  16. 50 mL of 2N acetic acid mixed with 10 mL of 1N sodium acetate solution...

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  17. The pH of an acidic buffer mixture is:

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  18. A certain buffer solution contains equal concentartion of X^(Theta) an...

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

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

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