Ionic EquilibriumHard
Question
pH of 0.1M Na2HPO4 and 0.2M NaH2PO4 are respectively : pKa for H3PO4 are 2.2, 7.2 and 12.0.
Options
A.4.7, 9.6
B.9.6, 4.7
C.4.7, 5.6
D.5.6, 4.7
Solution
For Na2HPO4, pH = 
= 9.6.
For Na2HPO4, pH =
= 4.7.
= 9.6.For Na2HPO4, pH =
= 4.7.Create a free account to view solution
View Solution FreeMore Ionic Equilibrium Questions
A 50 ml solution of strong acid of pH = 1 is mixed with a 50 ml solution of strong acid of pH = 2. The pH of the mixture...A solution of Na2CO3 is added drop by drop to litre of a solution containing 10-4 mole of Ba2+ and 10-5 mole of Ag+, if ...The solubility of PbF2 in water at 25oC is ~ 10-3 M. What is its solubility in 0.05 M NaF solution ?...The solubility product of AgCl is 1.8 × 10-10. Precipitation of AgCl will occur only when equal volumes of solution...A aqueous solution contains an unknown concentration of Ba2+. When 50 mL of a 1 M solution of Na2SO4 is added, BaSO4 jus...