Question

An organic compound A having a molecular formula C2H4O2 reacts with sodium carbonate and evolves a gas B which extinguishes the fire A also reacts with ethanol in presence of concentrated sulphuric acid to form a smelling substance C which is used in making perfumes.

a)Identify compound A and C
b)Write a balanced chemical equation to represent the conversion of compound A to C
c)Draw the electron dot structure of ethyne
d)Write one chemical test to distinguish between saturated and unsaturated hydrocarbons
e)Name the isomers of pentane

Answer 1

A is ethonic acid
B is CO2
C is ester

saturated and unsaturated compounds can be tested using bromine test .... if the colour of bromine which is brown in colour disappears it is unsaturated or else it is saturated

isomers of pentane are n- pentane , iso- pentane , neo - pentane

sorry in this app there is no keyboard support to type electron dot structure