How many structural isomers can you draw for pentane?

Draw the structures for the following compounds:

(i) Ethanoic acid (ii) Bromopentane

(iii) Butanone (iv) Hexanal

Are structural isomers possible for bromopentane?

What are the two properties of carbon which lead to the huge number of carbon compounds we see around us?

How is ethane prepared from ethanol? Give the reaction involved in it.

Give chemical tests to detect the presence of a. ethanol and b. ethanoic acid.