Final answer:
To measure the melting point of benzoic acid using an aluminium melting block, follow these steps: prepare the block, weigh the acid, heat the block, observe the melting temperature, and record the melting point.
Step-by-step explanation:
To measure the melting point of benzoic acid using an aluminium melting block, you would follow these steps:
- Prepare the aluminium melting block by cleaning it thoroughly.
- Weigh a small amount of benzoic acid and place it on the melting block.
- Heat the block gradually while monitoring the temperature.
- Observe the temperature at which the benzoic acid melts completely.
- Record the melting point of benzoic acid.
The melting point of benzoic acid can be used to identify the substance and assess its purity.