# Why do some ammonium salts decompose to give NH3 while some give N2 [closed]

Why does these reactions happen like this (NH4)2Cr2O7 -> N2
NH4OH -> NH3

• How long have you been thinking about it, before asking? Jun 22 at 14:11
• Did you notice that the ones giving N2 all contain a certain element suggested by this icon? 🎱 Jun 22 at 15:50
• First, $\ce{NH4OH}$ does not exist ! It is just an aqueous solution of $\ce{NH3}$ Second, the ammonium salts producing $\ce{N2}$ by heating are all accompanied by an oxidizing anion. Example :$\ce{NH4NO2}$ and $\ce{(NH4)2Cr2O7}$ Jun 22 at 16:28
• It's not that only ammonia or nitrogen is the end product. Ammonium nitrate decomposes to nitrous oxide. Jun 23 at 2:02