nakuru district secondary schools trial examination - KCSE Online

1 The diagram, below shows a students set-up for the preparation and collection of hydrogen Gas100cm 3 of 0.6mHclwater3.25 zincpowder(a) How would the final volume of hydrogen gas produced be affected if 80cm 3 of 0.85mhydrochloric acid was used. Show your working(3marks)……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..2 Name the process that takes place when(i) Ethanol reacts with concentrated sulphuric acid at 180 o C to form ethane(1mark)…………………………………………………………………………………………………..(ii) Ammonium chloride is heated and forms white powder on the cooler parts of the boiling tube(1mark)…………………………………………………………………………………………………(iii) Propanol reacts with propanbic acid in the presence of a catalysis to form propyl propanoate(1mark)…………………………………………………………………………………………………3ExcessIdentifyPbOSolution KVisit:1. Warm2. filterWhitesolidHeatstrongly3. cool2www.kcse-online.info for thousands of free Past papersSolid LBrown gas +Gas M