CH-1662
Surface area
Chemistry · Secondary 4 · Hard · Surface area
The reaction between marble chips (calcium carbonate) and excess hydrochloric acid is carried out twice using 50.0 cm³ of the same acid each time.
In experiment 2, the volume of carbon dioxide produced reaches the same final value as in experiment 1, but the gas is produced faster.
Which change to experiment 1 could give the results of experiment 2?
A. Use a larger mass of marble chips.
B. Use a higher concentration of acid.
C. Use smaller pieces of marble chips.
D. Increase the temperature of the acid.
In experiment 2, the volume of carbon dioxide produced reaches the same final value as in experiment 1, but the gas is produced faster.
Which change to experiment 1 could give the results of experiment 2?
A. Use a larger mass of marble chips.
B. Use a higher concentration of acid.
C. Use smaller pieces of marble chips.
D. Increase the temperature of the acid.
- Use a larger mass of marble chips.
- Use a lower concentration of acid.
- Use smaller pieces of marble chips.
- Decrease the temperature of the acid.
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