CSEC Chemistry · January 2019 · Paper 1 · Question Q8
When 100\text{ cm}^3 of 2\text{ mol dm}^{-3} hydrochloric acid (in excess) are added to 5.0\text{ g} of granulated zinc, hydrogen gas is evolved at a certain rate. If 5.0\text{ g} of powdered zinc were used instead, the rate of production of hydrogen gas would
- (A)increase because of the greater concentration of powdered zinc
- (B)increase because of the increased surface area of powdered zinc
- (C)decrease because of the decreased surface area of powdered zinc
- (D)decrease because of the lower solubility of powdered zinc
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