The curve shown below was obtained when solid naphthalene was heated to boiling.

The curve shown below was obtained when solid naphthalene was heated to boiling.

(a) Explain in molecular terms the changes occurring in portions.
(i) AB.
(ii) DE.
(b) What is the significance of portion BC?

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(a) (i) Particles gaining kinetic energy, temperature increasing.
(ii) Particles rearranging themselves as they change from liquid to gas and all the heat supplied used for this rearrangement and no temperature rise occurs.
(b) Melting point of naphthalein.

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sharon kalunda answered the question on March 29, 2019 at 09:43

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