Question

what is the observation when silver(2) nitrate is heated in a test tube?

Answer 1

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When lead nitrate is heated, it due to thermal decomposition gives out metal oxide, oxygen and nitrogen dioxide. Lead gives out a yellow buff coloured residue lead oxide with a reddish brown gas nitrogen dioxide.

Answer 2

Answer

When silver nitrate is heated first it decomposes forming silver nitrite which on further heating decompose giving silver metal.