Question
What are the limitations or drawbacks of a chemical equation?
Solution
A chemical equation does not give any information regarding:
1. The physical states of the reactants and the products, whether these are solids, liquids, gases or in the form of solution.
2. In case of solution, their concentration i.e. whether concentrated or dilute.
3. The time taken for the completion of the reaction.
4. Whether any heat is absorbed or given out during the chemical change.
5. The speed of a chemical reaction, whether it is slow or fast.
6. The conditions of temperature, pressure or catalyst etc. at which the reaction takes place.
