(a) What is homologous series? Give one example. (b) What will happens if ethanoic acid reacts with ethanol in the presence of an acid as a catalyst? Name the reaction. Write the chemical reaction for this reaction. (c) Why are soaps ineffective in hard water?
(a) A homologous series is a series of carbon compounds that have different numbers of carbon atoms but contain the same functional group. <br> For example, methane, ethane, propane, butane, etc. are all part of the alkane homologous series. (b)When ethanol reacts with ethanoic acid in the presence of an acid catalyst Esters are formed. This reaction is called Esterification reaction. CH3COOH + C2H5OH ---in the presence of acid----> CH3 COO C2H5 + H2O. (c) ions present in hard water react with the anions of fatty acids present in soap to form scum or curdy white precipitates. As a result, hard water does not produce lather with soap immediately.
