Question

reason-
Iron is rendered passive with nitric acid

alkali metals are good reducing agents

hcl gas cannot be dried over quick lime​

Answer 1

1.Iron is rendered passive with fuming nitric acid. Concentrated HNO3 being a strong oxidising agent oxidises iron forming a layer that makes iron non-reactive or passive. Zinc sulphide and dilute sulphuric acid.

2.Alkali metals are good reducing agents because alkali metals have one valence electron which they lose to attain stability. Hence, they themselves undergo oxidation causing reduction of others and are good reducing agents. They have a single electron that they want to get rid of and become a +1 cation

3 Hydrogen chloride is acidic whereas quick lime is basic, so they will react with each other hence quick lime can not be used to dry hydrogen chloride.

Answer 2

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