Advertisements
Advertisements
प्रश्न
Decomposition reactions can occur by heat.
Give two balanced reactions for each.
Advertisements
उत्तर
Heat:
In these types of reactions, a single reactant breaks down to give simpler products.
For example, when ferrous sulfate crystals are heated, they lose water and the colour of the crystals changes. This is because ferrous sulfate decomposes to ferric oxide, sulfur dioxide and sulfur trioxide.
\[\ce{\underset{\text{(Ferrous sulphate)}}{2FeSO4(s)} ->[\Delta] \underset{\text{Ferric oxide}}{Fe2O3(s)} + SO2(g) + SO3(g)}\]
Thermal decomposition of calcium carbonate to produce calcium oxide and Carbon dioxide is very important in many industries. The product calcium oxide, which is also called lime or quicklime, is used to manufacture cement.
\[\ce{\underset{\text{(Lime stone)}}{CaCO3(s))} ->[\Delta] \underset{\text{(Quick lime)}}{CaO(s)} + CO2(g)}\]
APPEARS IN
संबंधित प्रश्न
The reaction of iron nail with copper sulphate solution is ______ reaction.
Explain, giving one example of the following chemical change:
Thermal dissociation
(a) What is synthesis?
(b) What kind of chemical reaction is synthesis? Support your answer by an example.
Decomposition reactions can occur by electricity
Give balanced reactions.
State which of the substance given below evolve oxygen gas on thermal decomposition.
Anhydrous copper sulphate
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{Cl2 + 2Kl->2KCl + l2}\]
Give a balanced equation for thermal decomposition of mercury [II] oxide
Give a balanced equation for the preparation of two different insoluble lead salts from their salt solutions by double decomposition precipitation.
Convert an insoluble base
Differentiate between the following:
Synthesis reaction and a substitution reaction.
