Why should the physical states of the reactants and products be mentioned in a thermochemical equation?

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Solution

Thermochemical equation:
Such an equation in which information about heat change is included is called a thermochemical equation.
Importance of mentioning the physical states of reactants and products is:
The physical states of the reactants and products make the reaction more informative.
For example:
Carbon(C) and oxygen gas(O₂) react together to form carbon dioxide(CO₂).
$C open parentheses s close parentheses and O subscript 2 open parentheses g close parentheses yields with heat on top C O subscript 2 open parentheses g close parentheses$
Therefore, mentioning the physical states in thermochemical equations is important.

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