Distinguish iron powder and graphite powder by chemical method
This problem is very simple, the use of chemical methods to distinguish: there are many ways to give me introduce you to some here, one plus HCl for Fe+HCl=FeCl2+H2, C and HCl reaction, 2: they were put into CuSO4 solution, can replace the red metal iron, whereas C
Add dilute sulfuric acid, there is a bubble generated iron powder, the phenomenon is Shi Mofen
1., add dilute hydrochloric acid or dilute sulfuric acid, the bubble is iron powder2. heating, iron powder is black, graphite is ignited in the air3. is mixed with copper oxide, and heating, plus graphite can be generated to clarify the muddy lime water turbidity CO2, iron powder No.
