The equation 2HNO3 + Co -> 2NO2 + 2H2O + Co(NO3)2

Detailed information about the equation 2HNO₃ + Co -> 2NO₂ + 2H₂O + Co(NO₃)₂:
This equation describes the chemical reaction process between nitric acid (HNO₃) and cobalt (Co). The result of this reaction is the formation of nitrogen dioxide (NO₂), water (H₂O), and cobalt nitrate (Co(NO₃)₂).

Reaction conditions:
The reaction requires standard temperature and pressure. Nitric acid needs to have a high enough concentration for the reaction to occur. Additionally, cobalt must be in pure form for the reaction to take place.

Reaction Process:

• Step 1: HNO₃ acts on cobalt, producing cobalt nitrate and the gas NO₂ along with water.
• Step 2: Cobalt nitrate continues to react with water and NO₂, forming the final product.

Phenomena occurring:
During the reaction process, you can observe the color change of the solution from colorless (nitric acid) and bright red (cobalt) to brown (nitrogen dioxide), along with the formation of water droplets. Additionally, the formation of cobalt nitrate also results in a color change from the colorless nitric acid to the green of cobalt nitrate.