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Class XII Chemistry Chemical Kinetics 5

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Question 1

Each NH₃ molecule has six other NH₃ molecules as nearest neighbours in solid state; ΔH of sublimation of NH₃ molecule at the m.p. is 30.8 kJ mol^–1, and in the absence of H-bonding estimated ΔH of sublimation is 14.4 kJ mol^–1. Hence, strength of H-bond in solid NH₃ is:

Question 2

For the reaction H₂(g) + I₂(g) $Description: Description: D:\GradeStack Courses\JEE Mains (Sent by Ravi)\JEE Mains Full Test\AIEEE-Full-Test-4-New_files\image007.png$ 2HI(g) K = 55.3 at 699 K.
In a mixture that consists of 0.70 atm of HI and 0.02 atm each of H₂ and I₂ at 699 K, what will happen ?

Question 3

Equivalent mass of FeC₂O₄ in

Question 4

One mole of the complex compound Co(NH₃)₅ Cl₃, gives 3 moles of ions on dissolution in water, one mole of the same complex reacts with two moles of AgNO₃ solution to yield two moles of AgCl(s).
The structure of the complex is

Question 5

The polymer containing strong intermolecular forces e.g. hydrogen bonding, is

Question 6

The half – life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, the mass remaining after 24 hours undecayed is

Question 7

The reaction:

has been assigned to follow following mechanism.
I.

II.

III.

The rate constant of step II is 1.2 × 10^–4 mole^–1 L min^–1. While equilibrium constant of step I is 1.4 × 10^–2. What is the rate of reaction when concentration of NO and H₂ each is 0.5 mole L^–1.

Question 8

At what T both

and

are equal?

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Sep 20JEE & BITSAT