(a) Give one example each of a… | Chemistry

Question 1 Report

(a) Give one example each of a naturally occurring substance that;

(i) conforms to the general formula C(_x\)(H\(_2\)O)\(_y\);

(ii) contains the carboxyl group as its functional group.

(b) Name the process for obtaining: (i) paraffin oil from crude oil; (ii) benzene from ethyne.

Answer

Answer Details

(a) Examples of naturally occurring substances

(i) Conforms to the general formula C_x(H₂O)_y (a carbohydrate): glucose (or starch, cellulose, sucrose).
(ii) Contains the carboxyl group (-COOH) as its functional group: a fatty acid such as stearic acid (or citric acid found in citrus fruits).

(b) Names of the processes

(i) Obtaining paraffin oil (kerosene) from crude oil: fractional distillation.
(ii) Obtaining benzene from ethyne: polymerisation (cyclic trimerisation), \(3C_2H_2 \to C_6H_6\).

(a) Give one example each of a naturally occurring substance that; (i) conforms to the general formula C(_x\)(H\(_2\)O)\(_y\); (ii) contains the carboxyl gr...