What are the ways by which a chemical equation can be made more informative?

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what are the ways by which a chemical equation can be made more informative?

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  1. The chemical equation can be made more informative by mentioning the physical states of the reactants and the products.
  2. If a gas is liberated in the product, then it is represented by an upward directing arrow (↑) and if the product formed is in the form of a precipitate, it is represented by a downward directing arrow (↓).