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1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
What is [H+] in mol/L of a solution that is 0.20 M in CH3COONa and 0.10 M in CH3COOH? Ka for CH3COOH = 1.8 $$ \times $$ 10$$-$$5
A
3.5 $$ \times $$ 10$$-$$4
B
1.1 $$ \times $$ 10$$-$$5
C
1.8 $$ \times $$ 10$$-$$5
D
9.0 $$ \times $$ 10$$-$$6
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
In which of the following equilibrium Kc and Kp are not equal?
A
2NO(g) $$\rightleftharpoons$$ N2(g) + O2(g)
B
SO2(g) + NO2(g) $$\rightleftharpoons$$ SO3(g) + NO(g)
C
H2(g) + I2(g) $$\rightleftharpoons$$ 2HI(g)
D
2C(s) + O2(g) $$\rightleftharpoons$$ 2CO2(g)
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The dissociation constants for acetic acid and HCN at 25oC are 1.5 $$ \times $$ 10$$-$$5 and 4.5 $$ \times $$ 10$$-$$10 respectively. The equilibrium constant for the equilibrium
CN$$-$$ + CH3COOH $$\rightleftharpoons$$ HCN + CH3COO$$-$$ would be
A
3.0 $$ \times $$ 10$$-$$5
B
3.0 $$ \times $$ 10$$-$$4
C
3.0 $$ \times $$ 104
D
3.0 $$ \times $$ 105
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The ionization constant of ammonium hydroxide is 1.77 $$ \times $$ 10$$-$$5 at 298 K. Hydrolysis constant of ammonium chloride is
A
6.50 $$ \times $$ 10$$-$$12
B
5.65 $$ \times $$ 10$$-$$13
C
5.65 $$ \times $$ 10$$-$$12
D
5.65 $$ \times $$ 10$$-$$10
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