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Transcription of this question: 4.Calcium carbonate reacts with hydrochloric acid.(a)CaC03 (s) + 2HCl (aq) caC12 (aq) + H20(l) + C02 (g)Outline two ways in which the progress of the reaction can be monitored.details are required.No practical[2](b)The results of a series of experiments in which the concentration of HCI was varied areshown below.2220181614100 0.2 04 0.6 0.8 1.0[HCI] / moldm-30)Suggest why point D is so far out of line assuming human error is not the cause.[1]Suggest the relationship that points A, B and C show between the concentrationof the acid and the rate of reaction.

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