Chemistry
Certain thermal decomposition reactions, result in formation of oxides. Give balanced equations for the thermal decomposition of the following, which result in formation of a metallic oxide.
(a) Limestone
(b) Lead carbonate
(c) Calcium nitrate
(d) Calcium hydroxide.
Chemical Reaction
41 Likes
Answer
(a) Thermal decomposition of limestone
CaCO3 CaO + CO2
(b) Thermal decomposition of lead carbonate
PbCO3 PbO + CO2
(c) Thermal decomposition of calcium nitrate
2Ca(NO3)2 2CaO + 4NO2 + O2
(d) Thermal decomposition of calcium hydroxide.
Ca(OH)2 CaO + H2O
Answered By
27 Likes
Related Questions
A chemical reaction may be 'reversible' in nature. State the meaning of the term in italics. Give a reason why a catalyst is used in certain chemical reactions.
Give a balanced equation for the following -
(a) A reversible catalytic reaction involving -
(i) nitrogen as one of the reactants
(ii) sulphur dioxide as one of the reactants.
State which type of chemical reactions proceed with -
(a) Evolution of heat energy
(b) Absorption of heat energy.
State in each of the following reactions whether heat is evolved or absorbed
(i) water is added to quicklime
(ii) two neutral gases on passage through an electric arc give nitric oxide
(iii) two neutral gases combine to give - a basic gas.
State the meaning of the term 'oxide. Give a balanced equation for formation of the following oxides -
(a) Sulphur dioxide from a non-metal
(b) Zinc oxide from a metal
(c) Lead oxide from a mixed oxide.
Give two examples each of the following oxides -
(a) Acidic oxides
(b) Basic oxides
(c) Amphoteric oxides
(d) Neutral oxides.
State which of the following oxides i.e. (a) to (d) -
(i) React with water to give a base
(ii) React with a base to give salt & water
(iii) React with acids & bases to give salt & water.