Question

Why does it become necessary to specify the physical states of reactants and the products in a chemical reaction ? Explain with the help of reaction between Fe and water .

Answer 1

it becomes necessary because I somebody perform the reaction then it have the to perform right reaction if you not mention the state of reactants and products then examiner may choose any state and it. may be possible that reaction doesn't takes place as concentrated acids or bases not change the color of litmus paper. fe2+H2O -----> fe2o3 +H2 removed from the reaction