CH-1686
Surface area
Chemistry · Secondary 4 · Medium · Surface area
A student reacts excess calcium carbonate with 1.0 mol/dm³ nitric acid and measures the time taken to collect 25 cm³ of carbon dioxide. Which change will increase the rate of reaction without changing the total volume of gas produced?
- Use powdered calcium carbonate instead of large chips.
- Use 2.0 mol/dm³ nitric acid instead of 1.0 mol/dm³.
- Use half the mass of calcium carbonate.
- Use half the volume of nitric acid.
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