Question

14&15

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14. What is the difference between an ion and a dipole? Why is this difference important? (4) 15. The following three compounds have similar molecular weights. Draw their Lewis structures. Place them in order of increasing boiling point. Give your reasoning. (6) methanol: CH3OH ethane: CH3CH3 formaldehyde: H2C=0 3

Answer 1

Ion has a net zero dipole have species that charge charge formed from neutral species (atom) eg. Natikt etc. Jons Dipole have equal and opposite charges. The main difference never be is that neutral atom l'on but neutral atom dipole act as e symmetric charge electron cloud shifting of ponti charged spenes tody electron cloud. because OCCUX in an atom, no polarisation This difference is important will if l'onic compounds are difficult to Ag Cli be formed like (6) CH3OH > HEHO > CH3 CH₂ 104 O Н CH₃ CH3 H CNH Ho ic. ic. oH Ho iç o..H CH₃ OH & Hydrogen Bonding ours MIDUAL CAMERA pote interactioh Chh est . Normal Interaction. сно он H In (109)