Question

25. In what volume ratio NH CI and NH,OH having 1 M
concentration should be mixed to get a buffer
solution of pH = 9.26? (PK, of NH,OH = 4.74)
(1) 1 : 2.5
(2) 2.5 : 1
(3) 1:1
(4) 3.5: 1​

Answer 1

The pH of the buffer is: (BHU , 1994) ... The expression for the pOH of the basic buffer solution is as ... was reached when 36.12 mL of 0.1M NaOH have been