Marble reacts with hydrochloric acid to produce calcium chloride, water and carbon dioxide. In which of these mixtures is the rate of reaction likely to be the greatest?
a. 1 g of marble chips in 100 cm³ of hydrochloric acid at 20°C.
b. 1 g of powdered marble in 100 cm³ of hydrochloric acid at 30°C.
c. 1 g of powdered marble in 100 cm³ of hydrochloric acid at 20°C.
d. 1 g of marble chips in 100 cm³ of hydrochloric acid at 30°C.
b. 1 g of powdered marble in 100 cm³ of hydrochloric acid at 30°C.
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