(a) Draw a labelled diagram for the laboratory preparation of hydrogen chloride gas. (b) Give the balanced equation for the reaction. (c) Name the drying agent used in drying hydrogen chloride gas. (d) Phosphorus pentoxide and calcium oxide are good drying agents but they cannot be used to dry hydrogen chloride gas. Why?
(a) Write names and formulae of hydrocarbons containing a single and a double bond (one example for each). Give one characteristic chemical property of each. (b) What is a detergent ? Name one detergent. (c) Why have detergents replaced soap as a washing agent ?
(c) Draw the structural formulae of the two isomers of Butane. Give the correct lUPAC name of each isomer.