Find the conjugate acid of NH2–
1. NH3
2.NH4OH
3. NH4+
4.NH2–
Highest pH will be recorded for which of the following solutions if they are equimolar
1.AlCl3
2.BaCl2
3. BeCl2
4.LiCl
In 0.10 M aqueous solution of pyridine (C5H5N), find the percentage of pyridine that forms pyridinium ion (C5H5N+H) (Kb for C5H5N = 1.7 x 10-9 )
1.1.60%
2.0.77%
3. 0.0060%
4.0.01%
Find the pH of a solution when 0.01 M HCl and 0.1 M NaOH are mixed in equal volumes
1.12.65
2.1.04
3.7
4.2
On increasing the concentration of reactants in a reversible reaction, then equilibrium constant will
1.depend on the concentration
2.increase
3.unchanged
4.decrease
What will be the pH of a buffer solution having an equal concentration of B– and HB (Kb = 10-10 for B–)
1.7
2.4
3.10
4.6
Which of the following aqueous solution will be the best conductor of electricity?
1. NH3
2.CH3COOH
3.HCl
4.C6H12O6