Question

Write a limitations of chemical equations ?

Answer 1

1-Nature of reaction is known by seeing the arrow in a chemical equation ( reversible and irreversible).

2-Physical states of the reactants can be known by seeing a chemical reaction since (s)-solids, (l)-liquids and (g)-gases are often mentioned.

3- Using an upward arrow indicates evolution of a gas and a downward direction arrow indicates formation of precipitate.

Answer 2

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Chemical equation does not tell us :

1. The physical state of the reactants and the products that is whether the substance are solid liquid or gas.
2. The time taken for the completion of the reaction whether heat is given out or absorbed during the reaction .
3. The respective concentrations of the reactants and the products.
4. The rate at which the reaction proceeds.
5. Whether the reaction is reversible or Irreversible
6. Whether the reaction is completed or it is not completed .