5 (ii) Why is the melting and boiling points of $\mathrm{C}_{4} \mathrm{H}_{8}$ higher than that of $\mathrm{C}_{3} \mathrm{H}_{6}$ or $\mathrm{C}_{2} \mathrm{H}_{4}$ ? (iii) Why do we NOT see any gradation in chemical properties of a homologous series compounds? (iv) Write the name and structures of (i) aldehyde and (ii) ketone with molecular form $\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}$. 5 (ii) What happens when ' X ' is heated with excess concentrated sulphuric acid at 443 K ? Write chemical equation for the reaction stating the conditions for the reaction. Also, state the role played by concentrated sulphuric acid in the reaction. (iii) Name and draw the electron dot structure of hydrocarbon produced in the above reaction.
Explanation
The melting and boiling points of C4H8 are higher than that of C3H6 or C2H4 because C4H8 has a longer carbon chain, which requires more energy to break the intermolecular forces between the molecules.
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