1
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
The reaction,
2A(g) + B(g) $$\rightleftharpoons$$ 3C(g) + D(g)
is begun with the concentrations of A and B both at an initial value of 1.00 M. When equilibrium is reached, the concentration of D is measuread and found to be 0.25 M. The value for the equilibrium constant for this reaction is given by the expression
A
[(0.75)3 (0.25)] $$ \div $$ [(1.00)2 (1.00)]
B
[(0.75)3 (0.25)] $$ \div $$ [(0.50)2 (0.75)]
C
[(0.75)3 (0.25)] $$ \div $$ [(0.50)2 (0.25)]
D
[(0.75)3 (0.25)] $$ \div $$ [(0.75)2 (0.25)]
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 2008
MCQ (Single Correct Answer)
+4
-1
The values of for the reactions,

X $$\rightleftharpoons$$ Y + Z      . . . .(i)
A $$\rightleftharpoons$$ 2B       . . . .(ii)

are in the ratio 9 : 1. If degree of dissociation of X and A be equal, then total pressure at equilibrium (i) and (ii) are in the ratio
A
36 : 1
B
1 : 1
C
3 : 1
D
1 : 9
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