1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
If the concentration of OH$$-$$ ions in the reaction
Fe(OH)3(s) $$\rightleftharpoons$$ Fe3+(aq) + 3OH$$-$$(aq)
is decreased by 1/4 times, then equilibrium concentration of Fe3+ will increase by
A
64 times
B
4 times
C
8 times
D
16 times
2
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
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
The value of equilibrium constant of the reaction
HI(g) $$\rightleftharpoons$$ $${1 \over 2}$$H2(g) + $${1 \over 2}$$I2(g)
is 8.0. The The equilibrium constant of the reaction
H2(g) + I2(g) $$\rightleftharpoons$$ 2HI(g) will be
A
16
B
1/8
C
1/16
D
1/64
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H+ ion concentration in the mixture?
A
3.7 $$ \times $$ 10$$-$$3 M
B
1.11 $$ \times $$ 10$$-$$3 M
C
1.11 $$ \times $$ 10$$-$$4 M
D
3.7 $$ \times $$ 10$$-$$4 M
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