Question

(a) What is the molecular formula and structure of the alcohol which can be thought to be derived from pentane?
(b) Write the names of the following functional groups
(i) –CHO (ii) –OH (iii) –COOH (iv) Figure (v) –X
(c) What makes the candle flame yellow and luminous?

Answer 1

Explanation:

Pentanol :- $C_{5} H_{12}O$

The above is the molecular formulae and structure of the alcohol (given in the attachment) which can be thought to be derived from pentane.

b)The name of the following functional groups is as follows

(i) –CHO is denoted by Aldehyde

(ii) –OH is denoted by Alcohol

(iii) –COOH is denoted by Carboxylic acid

(iv) Figure is denoted by Ketone

(v) –X is denoted by Halogen

(c)If the candle flames does not burn completely means yellow and luminous flames are formed i.e the inadequate combustion of wax provides little unburnt carbon particles. These thick carbon particles spread in the flame, get burned and shine to give out a yellowish light.

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