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An orange solid (A) on heating gave a gr...

An orange solid `(A)` on heating gave a green residue `(B)`, colourless gas `( C)` and water vapour. The dry gas `( C)` on passing over heated magnesium gave a white solid `(D).(D)` on reaction with water have a gas `( E)` which formed dense white fumes with `HCl`. Indentify `(A)` to `( E)` and give the reactions.

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To solve the problem, we need to identify the compounds A to E based on the information provided and the reactions that occur during the heating and subsequent processes. Let's break it down step by step. ### Step 1: Identify Compound A - The problem states that an orange solid (A) on heating gives a green residue (B), a colorless gas (C), and water vapor. - The only known compound that fits this description is **Ammonium Dichromate** \((NH_4)_2Cr_2O_7\), which is an orange solid. Upon heating, it decomposes to form chromium(III) oxide (green), nitrogen gas, and water. **Reaction:** \[ ...
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