Question

Complete the blanks (i) to (v) in the passage given, using the following words. 

[Ammonium, reddish brown, hydroxyl, nitrogen dioxide, ammonia, dirty green, alkaline, acidic].

In the presence of a catalyst nitrogen and hydrogen combine to give (i) ______ gas. When the same gas is passed through water it forms a solution, which will be (ii) ______ in nature, and will contain the ions (iii) ______ and (iv) ______. A (v) ______ coloured precipitate of iron [II] hydroxide is formed when the above solution is added to iron [II] sulphate solution.

Answer 1

In the presence of a catalyst nitrogen and hydrogen combine to give ammonia gas. When the same gas is passed through water it forms a solution, which will be alkaline in nature, and will contain the ions ammonium and hydroxyl. A dirty green coloured precipitate of iron [II] hydroxide is formed when the above solution is added to iron [II] sulphate solution.