60 19 90 27 120 34 150 38 180 43 210 45 240 45 270 45 300 45 (i) Plot a graph of volume of oxygen gas against time (ii) Determine the rate of reaction at time 156 seconds (iii) From the find the time taken for 18cm3 of oxygen to be produced (iv) a chemical equation to show how hydrogen peroxide decomposes in the presence of manganese (IV) Oxide (b) The diagram below shows how a Le’clanche (Dry cell) appears:-
60 90 120 150 180 210 240 270 300 19 27 34 38 43 45 45 45 45 (i) Plot a graph of volume of oxygen gas against time (ii) Determine the rate of reaction at time 156 seconds (iii) From the find the time taken for 18cm3 of oxygen to be produced (iv) a chemical equation to show how hydrogen peroxide decomposes in the presence of manganese (IV) Oxide (b) The diagram below shows how a Le’clanche (Dry cell) appears:-
organic-chemistry-12.docx