Calculate the number of moles of N H 4 C l that should be added to one litre of 1.0 M N H 4 O H to prepare buffer solution with pH = 9 K b =2 × 10 − 5 , take log 2 = 0 .3

Question

Calculate the number of moles of N H 4 C l that should be added to one litre of 1.0 M N H 4 O H to prepare buffer solution with pH = 9 K b =2 × 10 − 5 , take log 2 = 0 .3, 3.4, 2.6, 1.5, 2

MARKS App · Accepted Answer

It is basic buffer pOH = pK b + log [salt] [weak base] pOH = 14 − 9 = 5 5 = 4 .7 + log x 1 0 .3 = log ​ x ⇒ x = 2

Search any question & find its solution

Looking for more such questions to practice?