Ancient statues made of marble (a form of calcium carbonate) are damaged by acid

Question

Ancient statues made of marble (a form of calcium carbonate) are damaged by acid rain because the reaction between the sulfuric acid in the rain and calcium carbonate produces soluble calcium sulfate, which washes away: CaCO_3(s) + H_2SO_4(aq) rightarrow CaSO_4(aq) + CO_2(g) + H_2O(l) Suppose an engineer decides to study the rate of this reaction. She prepares four reaction vessels by adding 170.5 g of solid calcium carbonate and 66. mL of 5.0 M sulfuric acid solution to each, and then filling the remainder of the vessel with distilled water. The volume and temperature of each vessel is shown in the table below. Arrange the reaction vessels in decreasing order of initial rate of reaction. In other words, select a "1" next to the vessel in which the engineer can reasonably expect the initial rate of reaction to highest, a "2" next to the vessel in which the rate of reaction would be next highest and so on.

Explanation / Answer

Note: 1) less amount of water means higher concentration so rate will be faster.

2) higher temperature means rate is faster

vessel initial rate A 3 B 4 C 2 D 1

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