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Carry out an experiment investigating the effect of varying acid concentration on the rate of decomposition of limestone on the exterior of the Lincoln Cathedral.
Member rating: No Rating | Words: | Submitted: Wed Oct 13 2004
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Lincoln Cathedral Investigation Planning: Aim of Investigation: To carry out an experiment investigating the effect of varying acid concentration on the rate of decomposition of limestone on the exterior of the Lincoln Cathedral. Preliminary Work: Aim: To find the most effective acid on the decomposition of limestone. Equipment: Conical flask Delivery tube Water bath Measuring cylinder Water Hydrochloric acid (50cm3) Nitric acid (50cm3) Sulphuric acid (50cm3) Limestone (3 medium sized marble chips) Stopwatch Diagram: Procedure: Medium marble chip of limestone was added to the conical flask and the inverted measuring cylinder was filled with water. It was carefully tipped into the water bath using the 'up and over' method. 50cm3 of 2M hydrochloric acid was added to the conical flask with the limestone. The delivery tube was put under the measuring cylinder and the timer was started to measure the time taken to collect 50cm3 of carbon dioxide gas. This procedure was repeated using two other acids; sulphuric and nitric. The acid that produced the fixed amount of carbon dioxide was...
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