Q.

For a reversible gaseous reaction N2+3H2⇌2NH3 at equilibrium, if some moles of H2 are replaced by same number of moles of T2 (T is tritium, isotope of H and assume isotopes do not have different chemical properties) without affecting other parameters, then :

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a

The sample of ammonia obtained after sometime will be radioactive.

b

Moles of N2 after the change will be different as compared to moles of N2, present before the change

c

The value of Kp or Kc will change

d

The average molecular mass of new equilibrium will be same as that of old equilibrium

answer is A.

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Detailed Solution

Since T2   has similar chemical properties as H2  so upon mixing NH2D and NHD2 are formed.
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