One mole of magnesium nitride on the reaction with an excess of water gives
(a) one mole of ammonia
(b) one mole of nitric acid
(c) two moles of ammonia
(d) two moles of nitric acid.
Answer: We have
The given redox reaction can be represented as:
Cl2(g) + So2(aq) + Cl-(aq) + So42-(aq)
The oxidation half reaction is:
S+4O2(aq) → S+6O42-(aq)
The oxidation number is balanced by adding two electrons as:
So2(aq) → ...
A Mg2+ ion and Mg atom differ by two electrons.
103 moles of Mg2+ and Mg atoms would differ by
103 × 2 moles of electrons
Mass of 2 ×103 moles of electrons...
Mass of 1 mole of aluminium atom = the molar mass of aluminium
= 27 g mol–1
An aluminium atom needs to lose three electrons to become an ion, Al3+
For one mole...
i. The reaction in which one reactant gets oxidised and the other reactant gets reduced is called redox reaction.
ii. When a magnesium ribbon burns in air with a dazzling flame...
When magnesium ribbon is burnt, dazzling white flame is observed and there is formation of white ash. Magnesium is said to be oxidised as it is combining with oxygen.
ii. The...
