Name two reagents which can be used to distinguish between ethene and ethyne.

Explanation

To distinguish between ethene (an alkene) and ethyne (an alkyne), we can use the following two reagents:

1. **Tollens' Reagent (Silver Nitrate in Ammonia)**:
- Ethyne (C2H2) can react with Tollens' reagent, leading to the formation of a black precipitate of silver. In contrast, ethene (C2H4) does not react with Tollens' reagent and will not produce any precipitate. This difference in reactivity allows us to distinguish between the two compounds.

2. **Cuprous Chloride in Ammonia (CuCl in NH4OH)**:
- Ethyne reacts with cuprous chloride in ammonia to form a white precipitate, while ethene does not react and thus does not produce any precipitate. This reaction also helps in differentiating between ethene and ethyne.

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