The degree of ionization of 0.4 M acetic acid will be (Ka = 1.8 × 10)
6.71 × 10-3
1.6 × 10-3
0.4 × 1.8 × 10-3
1.8 × 10-5
The product of molar concentrations of hydrogen ions and hydroxide ions in a 0.01 M aqueous solution of sodium chloride is known as
hydrolysis constant of salt
dissociation constant of acid
dissociation constant of base
ionic product of water
A solution contains Cl-, I- and SO ions in it. Which of the following ion is capable to precipitate all of the above when added in this solution?
Pb2+
Ba2+
Hg2+
Cu2+
B.
Ba2+
Ba2+ ion is capable to precipitate -Cl, -I and SO ions.
Ba2++ 2Cl- → BaCl2↓
Ba2+ + 2I- → BaI2↓
Ba2+ + SO → BaSO4 ↓
What is the pH of millimolar solution of ammonium hydroxide which is 20% dissociated?
3.699
10.301
4.691
9.301
Which of the following compounds is most acidic in nature?
4-chlorobutanoic acid
3-chlorobutanoic acid
2-chlorobutanoic acid
Butanoic acid
Solubility of which among the following solids in water changes slightly with temperature?
KNO3
NaNO3
KBr
NaBr
In the ln K vs plot of a chemical process having S° > 0 and H° < 0, the slope is proportional to (where K is equilibrium constant).
-|H°|
|H°|
S°
-S°
For the process,
A → B, at 298 K, G° is 163 kJ mol-1. The composition of the reaction mixture is [B] = 1 and [A] = 10000. Predict the direction of the reaction and the relation between reaction quotient (Q) and the equilibrium constant (K).
Forwards direction because Q > K
Reverse direction because Q > K
Forward direction because Q < K
Reverse direction because Q < K