MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryIonic equilibriumBuffer Solutions

For  preparing  a  buffer  solution  of  pH  6  by  mixing sodium  acetate  and  acetic  acid,  the  ratio  of  the concentration of salt and acid should be (Ka = 10 –5)

A.1 : 10
B.10 : 1✓ Correct
C.100 : 1
D.1 : 100
Explanation

pH = 6 therefore the solution is an acidic buffer. Using Henderson Hassel Balch equation. a salt pH = pK  + log acid 5 a a K  = 10 pK  = 5 salt 6 5 log acid salt log 1 acid salt 10 acid 1 salt : acid 10 :1

Practice More Like This

Take chapter-wise tests, track your progress, and master Ionic equilibrium.

Start Free Practice →