Advertisements
Advertisements
प्रश्न
The hydrogen ion concentration of a buffer solution consisting of a weak acid and its salts is given by ____________.
पर्याय
`["H"^+] = "K"_"a"(["acid"])/(["salt"])`
[H+] = Ka [salt]
[H+] = Ka [acid]
`["H"^+] = "K"_"a"(["salt"])/(["acid"])`
Advertisements
उत्तर
The hydrogen ion concentration of a buffer solution consisting of a weak acid and its salts is given by `underline(["H"^+] = "K"_"a"(["acid"])/(["salt"]))`.
Explanation:
According to Henderson equation
pH = `"pK"_"a" + log (["salt"])/(["acid"])`
i.e., −log [H+] = `-log "K"_"a" + log (["salt"])/(["acid"])`
−log [H+] = `log (["salt"])/(["acid"]) xx 1/("K"_"a")`
`log 1/(["H"^+]) = log (["salt"])/(["acid"]) xx 1/("K"_"a")`
∴ [H+] = `"K"_"a"(["acid"])/(["salt"])`
APPEARS IN
संबंधित प्रश्न
When NH4 Cl and NH4OH are added to a solution containing both, Fe3+ and Ca2+ ions, which ion is precipitated first and why?
Choose the most correct answer:
Which of the Na following is a buffer solution?
Answer the following in one sentence :
Classify the following buffers into different types :
CH3COOH + CH3COONa
Answer the following in one sentence :
Classify the following buffers into different types :
NH4OH + NH4Cl
Write one application of the following buffer:
Citrate buffer
Ksp of Al(OH)3 is 1 × 10−15 M. At what pH does 1.0 × 10−3 M Al3+ precipitate on the addition of buffer of NH4Cl and NH4OH solution?
Assertion (A): A solution containing a mixture of acetic acid and sodium acetate maintains a constant value of \[\ce{pH}\] on addition of small amounts of acid or alkali.
Reason (R): A solution containing a mixture of acetic acid and sodium acetate acts as a buffer solution around \[\ce{pH}\] 4.75.
Define Acidic buffer solution.
Write any four applications of buffer solution.
Explain the types of buffers with example.
