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Test on Chemical Kinetics

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Question 1

The arsenious sulphide sol has negative charge. The maximum coagulating power for precipitating is of:

Question 2

The amount of ice that will separate out on cooling a solution containing 50 g of ethylene glycol in 200 g water to –9.3 °C is

Question 3

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 4

Consider the reaction, 2A + B → Products
When concentration of B alone was doubled, the half-life did not change. When the concentration of A alone was doubled, the rate increased by two times. The unit of rate constant for this reaction is

Question 5

Nitramide, O₂NNH₂, decomposes slowly in aqueous solution according to the following reaction
O₂NNH₂ $Description: Description: D:\GradeStack Courses\JEE Mains (Sent by Ravi)\JEE Mains Full Test\AIEEE-Full-Test-4-New_files\image023.png$ N₂O + H₂O
The experimental rate law is $Description: Description: D:\GradeStack Courses\JEE Mains (Sent by Ravi)\JEE Mains Full Test\AIEEE-Full-Test-4-New_files\image024.png$
Which of the following step is not appropriate for the mechanism of above reaction ?

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Sep 20JEE & BITSAT