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Components of buffer solution are 0.1 M ...

Components of buffer solution are 0.1 M HCN and 0.2 M NaCN. What is the pH of the solution

A

`9.61`

B

`6.15`

C

`2.0`

D

`4.2`

Text Solution

Verified by Experts

The correct Answer is:
A
`pH = pK_(a) +log. [("Salt")/("acid")]`
` = 9.30 + log [(0.2)/(0.1)] = 9.30 + 0.3010 = 9.6 `
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ERRORLESS-IONIC EQUILIBRIUM-NCERT BASED QUESTIONS (HYDROGEN ION CONCENTRATION- PH SCALE AND BUFFER SOLUTION)
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  2. Which is incorrect for buffer solution

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  3. Components of buffer solution are 0.1 M HCN and 0.2 M NaCN. What is th...

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  4. To obtain a buffer wich should be suitable for maintaining a pH of abo...

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  5. Which of the following mixtures forms an acid buffer ?

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  6. A buffer solution has equal volume of 0.20 M NH(4)OH and 0.02 MNH(4)Cl...

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  7. How much sodium acetate should be added to a 0.1 M solution of CH(3)CO...

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  8. Which of the following is a buffer

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  9. A buffer solution is prepared by mixing equal concentration of acid (i...

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  10. A certain buffer solution sontains equal concentration of X^(-) and HX...

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  11. The condition for minimum change in pH for a buffer solution is

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  12. The ionization constant of a certain weak acid is 10^(-4). What should...

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  13. Which is not a buffer solution

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  14. Consider the following solutions of equal concentrations {:(A= NH(4...

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  15. A buffer solution contains 0.1 mole of sodium acetate dissolved in 100...

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  16. The pH of a solution at 25^(@)C containing 0.10 M sodium acetate and 0...

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  17. The most important buffer in the blood consist of :

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  18. Henderson's equation is pH = pK(a) + log.(["salt"])/(["acid"]). If the...

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  19. Which one of the following is the buffer solution of strong acidic nat...

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