Chemistry
A chemical reaction is often accompanied by external indications or characteristics.
Give two examples where a chemical reaction is accompanied by a change in colour of the reactants & products on completion of the reaction.
Related Questions
Explain the term chemical reaction with special reference to reactants and products.
Give a suitable example with equation to show the representation of a chemical reaction.
Give balanced equations for reactions involving evolution of a gas on addition of dilute acid to :
(a) sodium sulphite
(b) calcium carbonate
Give a balanced equation for conversion of:
(a) an ammonium salt to a basic gas
(b) a soluble lead salt to an insoluble lead salt – formed as a white precipitate.