In which of the following is the entropy change positive?...
In which of the following is the entropy change positive?
Thermal dissociation of ammonium chloride
Reaction between an acid and a base
Addition of concentrated acid to water
Dissolution of sodium metal in water
Correct answer is A
Thermal dissociation of ammonium chloride is an endothermic reaction as heat is absorbed for a positive entropy, with more products than reactants.
Two metallic ions commonly present in hard water are ...
Synthesis gas is a mixture of ...
Sulphur exists in six forms in the solid state. This property is known as ...
Which of the following substances is a heavy chemical? ...
During water treatment for town supply, water is passed through layers of send beds in order to ...
Hydrogen can be displaced from a hot alkaline solution by? ...
Which of these metals CANNOT replace hydrogen from alkaline solutions? ...