CH-1679
Surface area
Chemistry · Secondary 4 · Hard · Surface area
Marble chips (calcium carbonate) react with excess dilute hydrochloric acid to produce carbon dioxide gas. Experiment X uses large marble chips, while experiment Y uses the same mass of powdered marble.
Which statement explains why carbon dioxide is produced faster in experiment Y?
Which statement explains why carbon dioxide is produced faster in experiment Y?
- Powdered marble has a larger surface area, so more frequent effective collisions occur.
- Powdered marble has a higher temperature than large chips.
- Powdered marble has a higher concentration of calcium carbonate.
- Powdered marble lowers the activation energy of the reaction to zero.
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