CBSE
Consider the following salts : NaCl, HgCl2, Hg2Cl2, CuCl2, CuCl and AgCl. Identify the correct set of insoluble salts in water.
Hg2Cl2, CuCl, AgCl
Hg2Cl, CuCl, AgCl
Hg2Cl2, CuCl2, AgCl
Hg2Cl2, CuCl, NaCl
In which of the following acid-base titration, pH is greater than 8 at equivalence point?
Acetic acid versus ammonia
Acetic acid versus sodium hydroxide
Hydrochloric acid versus ammonia
Hydrochloric acid versus sodium hydroxide
Which of the following is strongest Bronsted base?
ClO-
ClO2-
ClO3-
ClO4-
Among the following the weakest base is
C6H5CH2NH2
C6H5CH2NHCH3
O2NCH2NH2
CH3NHCHO
The pH value of decinormal solution of NH4OH which is 20% ionised is
12.95
12.30
14.70
13.30
The pH of aqueous solution ofammonium formate is (pKa of HCOOH = 3.8 and pKb of NH3= 4.8)
7
6.0
6.5
8.9
Among the following the strongest acid is
CH3COOH
C6H5COOH
m-CH3OC6H4COOH
p-CH3OC6H4COOH
For the reaction,
2SO2 (g) + O2 (g) 2SO3 (g) at 300 K, the value of G° is -690.9 R. The equilibrium constant value for the reaction at that temperature is (R is gas constant)
10 atm-1
10 atm
10
1
When the temperature of reactions will increase then the effect on pH value will
increase
decrease
first increases then decreases
remains same.
What is the pH of 0.01 M glycine solution? For glycine ?
3
10
6.1
7.2