Nitrate of NH4NO3 ammonium is an average salt of nitric acid. It represents white crystal substance. It is widely applied in the industry and mining as mix of ammonium nitrate with different types of combustible and explosive substances. The most part of nitrate of ammonium is used as good nitrogen fertilizer or as one of products of receiving other fertilizers. There are more than three ways of receiving salt. One of them is known as the way Odda, or a nitrophosphatic way.
It is required to you
- nitric acid, water, sodium phosphate (apatite), test tubes
Instruction
1. Take apatite. Natural phosphate calcium - mineral class of phosphates, pale green, blue, flavovirent or pink color with glass gloss. Place a small amount of substance in a test tube.
2. Then carefully dissolve calcium phosphate. For this purpose add water and nitric acid. During reaction, calcium nitrate, phosphoric acid and (PO4)2+6HNO3+12HOH water.Ca3> 2H3PO4+3Ca(NO3) 2+12HOH are formed
3. Cool the received solution up to 0? C. At the same time the received nitrate of calcium crystallizes, forming complex connection, Ca(NO3)2? 4HOH - calcium nitrate tetrahydrate.
4. Separate connection from phosphoric acid. This substance of white, light gray, light-beige color.
5. Influence the received crystal substance and not remote phosphoric acid ammonia. The white deposit, calcium hydrophosphate, and required nitrate of ammonium.Ca (NO3)2+4H3PO4+8NH3> CaHPO4v+2NH4NO3+3(NH4)2HPO4 is as a result formed