Ionic EquilibriumHard
Question
The pH of an acid buffer can be raised by 2 units by
Options
A.Increasing the concentration of both weak acid and salt by two units.
B.Increaseing the concentration of both the acid and salt by 10 times.
C.Diluting the solution by 10 times.
D.Increasing the concentration of the salt by 10 times and decreasing concentration of the acid by 10 times.
Solution
pH1 = pKa + log 
pH1 = pKa + log
pH2 = pKa + log
pH2 - pH1 = log
- log
2 = log
∴
= 102 = 100
This is only possible, if the concentration of salt is increases by 10 times and the concentration of acid is decreased by 10 times
pH1 = pKa + log
pH2 = pKa + log
pH2 - pH1 = log
- log2 = log
∴
= 102 = 100This is only possible, if the concentration of salt is increases by 10 times and the concentration of acid is decreased by 10 times
Create a free account to view solution
View Solution FreeMore Ionic Equilibrium Questions
The reaction kinetics can be studied by...Which of the following relation(s) is/are true for alkaline solution?...24. Air containing 79% of nitrogen and 21% of oxygen by volume is heated at 2200K and 1atm util equilibrium is establise...If Ka1 and Ka2 of H2SO4 are 10-2 and 10-6 respectively then...Aniline behaves as a weak base. When 0.1 M, 50 ml solution of aniline was mixed with 0.1 M, 25 ml solution of HCl the pH...