Plants contain many different types of carbon compounds.

1. (a)Carbon compounds are made in plants by photosynthesis. Write the overall equation for photosynthesis and state the conditions required for this process.[3]
2. (b)(i)Starch is a polymer found in plants. Starch can be hydrolysed. Give the name of the product formed when starch is hydrolysed.[1]
3. (b)(ii)Give the reagent and conditions needed to hydrolyse starch.[2]
4. (c)(i)When wood chips are heated in the absence of air, a colourless distillate is formed. wood chips heat cold water distillate The distillate contains ethanoic acid, esters and other organic compounds. Ethanoic acid reacts with calcium hydroxide to form a salt and water. Give the name and formula of the salt formed. name formula[2]
5. (c)(ii)One of the esters in the distillate has the molecular formula, C4H8O2. Draw the structure of an ester with this formula, showing all the atoms and all the bonds.[1]
6. (c)(iii)The distillate also contains a compound with the following composition. element | percentage by mass ---|--- carbon | 37.5 hydrogen | 12.5 oxygen | 50.0 Deduce the empirical formula of this compound.[2]

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