(a) Explain with example, how the physical states of the reactants and products can be shown in a chemical equation
(b) Balance the following equation and add state symbols:
`Zn+HCl toZnCl_(2)+H_(2)`
(c ) Convey the following information in the form of a balanced chemical equation :
"An aqueous solution of ferrous sulphtate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution"

Answer

`(b)Zn(s)+2HCl(aq)toZnCl_(2)(aq)+H_(2)(g)`
(c ) `FeSO_(4)(aq)+2NaOH(aq)toFe(OH)_(2)(s)+Na_(2)SO_(4)(aq)`