Myeou

Reaction between NO and O3 is a luminescence reaction and it forms NO2 and O2 with light. Why light it produced in the reaction. Is it because of at the end electrons NO2 going down from a higher state ? If it yes , if we heat up NO2 will it make that glow again ?

CuCl was in NH3 solution. And no it is not homework i amm telling the colors because it could be helpfulll to define to what happens

I was searching for a reaction to know which solution contains CuCl and which solution contains CuCl2... There was a NH3 + CuCl Solution and CuCl2 solution. When i added H2O2 to CuCl solution , dark-brown percipate was fromed.It was like sensitive to air. When it contacted with air its color turned to dark-yellowish-green.The color of this solution was always blue what with brown percipate the bottom. When i added H2O2 to CuCl2 solution , a greenish - white colored percipate was formed.But i have no idea about its sensitivity to air.The Solution wast blue . The firs drops of NH3 formed the blue color as i waited at the surface after mixing it color was gone. What are they could be ??

Well there is one thing that i dont get it on buffer solution... Lets say that we will make buffer solution from Na2HPO4 and KH2PO4. This salt will dissolve like this in water : Na2HPO4 => 2Na + HPO4 KH2PO4 => K + H2PO4 So our buffer solution is going on this equilibrium ; H2PO4 <=> H + HPO4 in that case , the pH of the solution is depends on H+ ions that forms in equilibrium. But ; doesnt HPO4 also dissolves like this in water ? HPO4 <=> H + PO4 shouldn't the pH also depends on the last equilibrium too ?