Q.

1.1 mole of A mixed with 2.2 mole of B and the mixture is kept in a 1 litre at the equilibrium A + 2B  2C + D is reached. At equilibrium 0.2 mole of C is formed, then the value of KC will be

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a

0.005

b

0.01

c

0.0001

d

0.001

answer is B.

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Detailed Solution

                        A     +        2B              2C      +         D

Initial mole      1.1             2.2                   0                   0

At Eq.            1.1 - x        2.2 - 2x            2x                  x

                      1.1 - 0.1    2.2 - 0.2           0.2                 0.1

                       1              2                      0.2                 0.1

Active mass    11            21                   0.2                 0.1

KC=C2 DA B2= 210×210×110 1 × 2 × 2

= 11000=0.001

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1.1 mole of A mixed with 2.2 mole of B and the mixture is kept in a 1 litre at the equilibrium A + 2B ⇌ 2C + D is reached. At equilibrium 0.2 mole of C is formed, then the value of KC will be