Question

differentiate between:(a)combination and decomposition reactions(b). precipitation and neutralisation reactions(c)acidic and basic oxides

Answer 1

combination reaction are those in which two reactants combine to form a single product..ex-C+02=CO2
decomposition reaction is opposite of it i.e. a single reactant breaks to form two or more product..ex-Agbr2=ag+br2

Answer 2

Here is your answer:

(a) Combination reaction is the reaction in which two or more products combine together to make a new product. Eg : CaO + H2O -----> Ca(OH)2

Decomposition reaction is the reaction in which a single reactant breaks down to form two or more products. Eg: CaCO3 (heat) ----> CaO + CO2

(b) Precipitation reaction is the reaction in which produces a precipitate and is settled down. Eg: Na2SO4 + BaCl2 ---> BaSO4 + NaCl⬇

Neutralization reaction is the reaction in which acid or acidic oxide react with base or basic oxide to form salt and water. Eg: NaOH + H2SO4 ----> Na2SO4 + H2O

(c) Oxides of metals are of basic nature.Eg: MgO, Na2O, etc

Oxides of non metals are of acidic nature. Eg: SO2, Cl2O7, etc

HOPE IT HELPS YOU.