Question

how can we identify that reaction is going on​

Answer 1

• Here is your Answer➝

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

Explanation:

I hope it's helpful for you.

Answer 2

Explanation:

You can determine whether a reaction is spontaneous by calculating the standard Gibbs free energy of reaction, the difference in Gibbs free energy between pure products and pure reactants in their standard states.