Question

CO2 and SO2 both turn lime water milky. How to distinguish between them?

Answer 1

Method to distinguish between carbon dioxide and sulfur dioxide gas.

Explanation:

• The gases such as carbon dioxide as well as sulfur dioxide can convert lime water into milky.
• To distinguish them, the following two methods can be used:

1. The carbon dioxide gas converts lime water to milky faster whereas sulfur dioxide gas does it at slower rate.
2. Second, Sulphur dioxide converts the moist dichromate from orange to green whereas carbon dioxide doesn't show any such reaction with dichormate paper .

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