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EXPERIMENT TO INVESTIGATE INTO THE EFFECT OF SURFACE AREA OF A SOLID REACTANT ON THE RATE OF REACTION AIM To investigate the effect of particle size on the rate of the chemical reaction. METHOD * 20cm³ 1.0 mol/l hydrochloric acid solution was measured and poured into beaker. * 2.0g of calcium carbonate was weighed on the filter paper. * Beaker containing acid, filter paper with calcium carbonate was placed on a balance. * The total contents were weighed on the balance pan. The mass was recorded. * Calcium carbonate from filter paper was transferred into acid in the beaker. At the same time stop clock was started. * The mass was recorded with three particle size samples. APPARATUS/MATERIALS Items/chemicals Quantity Calcium carbonate 2.0g x 3 Hydrochloric acid 20cm³ Beaker 3 Measuring cylinder 1 Measuring balance 1 RESULTS Large sample Medium sample Small sample Time in seconds (S) Total mass lost (g) Total mass lost (g) Total mass lost (g) 0 0 0 0 15 0.006 0.033 0.038 30 0.008 0.034 0.039 45 0.013 0.037 0.047 60 0.023 0.041 0.062 90 0.032 0.05 0.093 120 (2 mins) 0.079 0.063 0.123 240 (4 mins) 0.127 0.099 0.212 360 (6 mins) 0.143 0.172 0.263 480 (8 mins) 0.147 0.213 0.293 600 (10 mins) 0.2 0.25 0.311 Table...

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