How to make a chemical equation more informative?
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Explanation:
Chemical equation is the representation of a chemical reaction in the form of symbols for substances that are involved in the reaction.
It is a method used to present a chemical reaction with the help of symbol and formulae of the substance involved in it.
The substances which combine or react are known as reactant.
The reactant molecules on the left side or behind the arrow interact with each other such that new bonds are formed resulting in the formation of products.
The new substance produced in a reaction are known as products.
The products are on the right side or ahead of the arrowhead.
A reacts with B to form X and Y as shown below:
A + B → X + Y
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TO MAKE EQUATIONS MORE INFORMATIVE:
The chemical equation can be made more informative
By indicating the physical states of the reactants and products.
g. ‘s’ is used for solids, ‘l’ for liquids and ‘g’ for gas. For an aqueous solution, ‘(aq)’ is used.
By indicating heat changes taking place in the reaction.
g. An exothermic reaction is indicated by writing +Heat or +Heat energy or just +Energy on the product side of the equation.
An endothermic reaction is indicated by writing +Heat or +Heat energy or just +Energy on the reactant side of the equation.
By indicating the conditions under which the reaction takes place.
E.g. If the reaction takes place in the presence of a catalyst, then the symbol or formula of the catalyst is written above or below the arrow sign.
The chemical equation can be made more informative
By indicating the physical states of the reactants and products.
g. ‘s’ is used for solids, ‘l’ for liquids and ‘g’ for gas. For an aqueous solution, ‘(aq)’ is used.
By indicating heat changes taking place in the reaction.
g. An exothermic reaction is indicated by writing +Heat or +Heat energy or just +Energy on the product side of the equation.
An endothermic reaction is indicated by writing +Heat or +Heat energy or just +Energy on the reactant side of the equation.
By indicating the conditions under which the reaction takes place.
E.g. If the reaction takes place in the presence of a catalyst, then the symbol or formula of the catalyst is written above or below the arrow sign.
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