Chemistry
Give an example of each:
Write the decomposition reactions for the following:
(i) Metallic oxide on heating forms metallic oxide and oxygen.
(ii) A compound on heating gives a gas which turns lime water milky.
(iii) A white hydroxide on heating gives a yellow residue and water vapours.
Chemical Reaction
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Answer
(i)
(ii) ZnCO3 ⟶ ZnO + CO2 ↑
(iii) Zn(OH)2 ⟶ ZnO + H2O
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Related Questions
State the type of reactions and give one equation in each case.
(a) Two or more reactants combine to form a single product.
(b) A single reactant breaks up into two or more products.
Give an example of each:
Combination reaction in which:
(i) An element of valency 3 combines with nitrogen.
(ii) A non-metal oxide reacting with water to form an acid.
(iii) A metal oxide reacting with water to form its hydroxide.
Write the reaction for the decomposition of a nitrate which does not yield nitrogen dioxide on heating.
Give two balanced equations to show thermal dissociation.