What is the electronic configuration of chromium atom (Z = 24)? Give a reason for your answer.
Given that weight of lactose w = 8.45 g
Weight of water W = 100 g
Vapour pressure of pure water = 4.579 mm of Hg
Vapour pressure of solution = 4.559 mm of Hg
Now, according to Raoults’ law,
Molecular weight of lactose = 348.
i) State the second law of thermodynamics in terms of the entropy of the universe.
(ii) Calculate the maximum work that can be obtained from the given electrochemical cell constructed with two metals M and N.
The cell reaction is M + N+2 → M+2 + N
To precipitate group III cations NH4Cl should be added to the solution before the addition of ammonium hydroxide. Explain why.
A study of chemical kinetics of the reaction A+B → products, gave the following data at 25°C:
Find:
(1) The order of reaction with respect to A.
(2) The order of reaction with respect to B.
(3) The rate law.