Question 34
A teacher provides three equal 3-cm pieces of magnesium ribbon: A is a straight strip, B is cut into small pieces, and C is folded in layers. Wearing goggles and gloves, put 25 cm³ of dilute sulfuric acid into each labelled conical flask. Add the corresponding magnesium sample and start a stopwatch immediately. Record the time for the magnesium to disappear completely. Work under teacher supervision, away from flames; hydrogen gas is produced.
Record the reaction times in the table.
| Flask | Description of magnesium ribbon | Reaction time (s) |
|---|---|---|
| A | 3-cm strip | … |
| B | Small pieces | … |
| C | Folded in layers | … |
Record the reaction times in the table.
| Flask | Description of magnesium ribbon | Reaction time (s) |
|---|---|---|
| A | 3-cm strip | … |
| B | Small pieces | … |
| C | Folded in layers | … |
