Practical: Effect of Surface Area on Rate of Reaction
2 guided lessons · 18 checks · 3. Physical Chemistry → Rates of Reaction
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Marble chips and gas collection
Calcium carbonate chips meet dilute hydrochloric acid in the classic rate practical. This lesson states the aim, lists the apparatus and walks the five-step method that fills the results table.
What you know already
From Measuring Rates you already know the gas-collection set-up that times a fizzing reaction. This practical aims that apparatus at marble chips, varying only their size to expose the surface area effect. The conclusion you draw at the end restates collision theory in chips and acid.
Key points of understanding
- The aim is to investigate the effect of changing surface area on the rate of reaction.
- A fixed volume of hydrochloric acid is placed in a conical flask connected to an inverted measuring cylinder.
- Marble chips are added, the bung is closed, and the gas volume in a fixed time is recorded.
- The method is repeated with different sizes of marble chips for comparison.
- The investigation covers both chip size and acid concentration on the marble chip reaction.
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1.Marble chips and gas collection
Calcium carbonate chips meet dilute hydrochloric acid in the classic rate practical. This lesson states the aim, lists the apparatus and walks the five-step method that fills the results table.
Key points
- The aim is to investigate the effect of changing surface area on the rate of reaction.
- A fixed volume of hydrochloric acid is placed in a conical flask connected to an inverted measuring cylinder.
- Marble chips are added, the bung is closed, and the gas volume in a fixed time is recorded.
- The method is repeated with different sizes of marble chips for comparison.
Guided content from the SME authoring corpus — note rn_H6ZVkxvdNgYDvfFb, pinned at 51a6ed34e715 · promoted SyllabAI/syllabai-resources e967e75f1339
