ExamBro
ExamBro
enEnglishguગુજરાતી
JEE Mains · Chemistry · STD 11 - 6.2. Equilibrium - II (icon Equilibrium)

એક નિર્બળ એસિડ \((HA)\) અને નિર્બળ બેઇઝ \((BOH)\) ના \(pK_a\) અને \(pK_b\) અનુક્રમે \(3.2\) અને \(3.4\) છે. તો તેમના ક્ષાર \((AB)\) ના દ્રાવણની \(pH\) શોધો.

  1. A \(7.2\)
  2. B \(6.9\)
  3. C \(7.0\)
  4. D \(1.0\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(6.9\)

Step-by-step Solution

Detailed explanation

For the salt of weak acid and weak base, we have \(\mathrm{pH} =7+\frac{1}{2} \mathrm{p} K_{\mathrm{a}}-\frac{1}{2} \mathrm{p} K_{\mathrm{b}} \) \(=7+\frac{1}{2}(3.2)-\frac{1}{2}(3.4) \) \(=6.9\)
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app