QQuestion
Differentiate between the following pairs based on the criteria given:
(a) Sulphuric acid and Nitric acid (using barium chloride solution)
(b) Unsaturated and Saturated hydrocarbons (type of bond present)
✓Answer
(a) When sulphuric acid is added to a solution of barium chloride it reacts with barium chloride to form barium sulphate which is a white precipitate.
\mathrm{H_2SO_4 + BaCl_2 \rightarrow BaSO_4\downarrow + 2HCl}When nitric acid is added to barium chloride, there is no reaction to form a precipitate because nitric acid does not contain sulphate ions. The solution remains clear.
(b) Unsaturated Hydrocarbons contain one or more double or triple bonds between carbon atoms. Examples include alkenes (with double bonds) and alkynes (with triple bonds). Saturated Hydrocarbons only have single bonds between carbon atoms.
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