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Chemical Equilibrium - 3
1.
Strength of an acid can be determined by.
a) pKb
b) pKw
c) P[OH]
d) pKa
2.
In an exothermic reversible reaction increase in temp shifts the equilibrium to.
a) Product side.
b) None.
c) Remains unchanged
d) Reactant side.
3.
Unit of Kw are.
a) mole
2
dm
-3
b) mole dm
-3
c) mole
2
dm
-3
d) mole
2
dm
-6
4.
A basic buffer solution can be prepared by mixing
a) Weak base and its salt with strong acid.
b) Strong acid and its salt with weak base
c) Strong base and its salt with weak acid.
d) Weak acid and its salt with strong base.
5.
Buffer action can be explained by.
a) Common ion effect.
b) All above.
c) Le-chatlier’s Principle
d) Law of mass action
6.
Ionization of weak acid is expressed in term of following constant.
a) Kn
b) Kb
c) Kw
d) Ka
7.
Solubility of Ca(OH)
2
is exothermic. If solubility will increase.
a) At low temp
b) None.
c) At high temp
d) Temp independent
8.
Haber process
a) V
2
O
5
b) Lowry Bronsted.
c) Resist the Change in pH
d) Iron
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