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19 An excess of calcium carbonate is added to dilute hydrochloric acid, X.
The carbon dioxide gas given off is collected and its volume recorded at regular time intervals.
Line X on the graph shows the results obtained.
The experiment is repeated using dilute hydrochloric acid, Y.
Line Y on the graph shows the results obtained.
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19 An excess of calcium carbonate is added to dilute hydrochloric acid, X.
The carbon dioxide gas...
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