Hints

1. a) What affect does a catalyst have on the activation energy?; b) What is activation energy anyway? ; c) Enthalpy change = energy of products – energy of reactants
2. Ignore this one!
3. a) How many moles in 9.7 g of zinc? What about 500 cm³ of oxygen? b) Use the limiting reagent from a); b) What effect does sulphur dioxide have on the environment?
4. How do we know that the double bonds are not “normal” double bonds?

Higher Chemistry Data Booklet

Standard Grade Topic 13 – Plastics and Synthetic Fibres

Home Practice: “Hydrocarbons and Fuels”