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Question

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


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Solution

A chemical equation can be made more informative in the following ways:

  • The physical state of each reactant and product can be shown by letters in brackets (s) for solid, (l) for liquid, (g) for gas and (aq) for the aqueous state.
  • Evolution or addition of heat during the reaction can be denoted by adding or subtracting a
    heat term on the product side.
  • Temperature, pressure, and catalyst can be indicated above the arrown separating the
    reactants and products.
  • The concentration of reactants and products is indicated by adding the word (dil) for dilute and (cone)
    for concentrated before their formulae.
  • By the sign information about irreversible and reversible reactions can be obtained.

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