Question

CaCO₃ + 2HCl[dil.] → CaCl₂ + H₂O + CO₂ [g]

State the information not conveyed by the above chemical equation. 

Answer 1

Information not conveyed are :

1. Time, a reaction takes to complete.
2. About the concentrations of reactants and products.
3. Speed of reaction.
4. Changes in color occurring – during the reaction.
5. Whether heat is given out or absorbed during the reaction.
6. The physical state of reactants and products.