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

\(0.0504 \,M,NH _{4} Cl\) के \(5.0\, mL\) तथा \(0.0210\, M\,NH _{3}\) विलयन के \(2 \,mL\) के मिश्रण में \(OH\) की सान्द्रता \(x \times 10^{-6} M\) है । \(x\) का मान है।.............. (निकटतम पूर्णाक में) [दिया है : \(K _{ W }=1 \times 10^{-14}\) and \(K _{ b }=1.8 \times 10^{-5}\) ]

  1. A \(3\)
  2. B \(4\)
  3. C \(5\)
  4. D \(6\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(3\)

Step-by-step Solution

Detailed explanation

\(\left[\mathrm{NH}_{4}^{+}\right]=0.0504 \,\&\,\left[\mathrm{NH}_{3}\right]=0.0210\) So \(\mathrm{K}_{b}=\frac{\left[\mathrm{NH}_{4}^{+}\right]\left[\mathrm{HO}^{-}\right]}{\left[\mathrm{NH}_{3}\right]}\)…
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