What are the information conveyed by a chemical euations? What are its drawbacks?
What are the information conveyed by a chemical euations? What are its drawbacks?
A balanced chemical equation gives the following information:
1. The chemical species (reactants) reacting with each other.
2. The products formed in the chemical reaction.
3. The number of molecules of the reactant reacting and the number of molecules of product formed (gives the smallest, whole-number ratio of the moles of reactants and products).
4. The physical state of the reactants and the products like (if mentioned in the chemical equation):
(s) - Solid
(l) - Liquid
(g) - Gas
(aq) - Aqueous state
5. The type of reaction:
Combination
Decomposition (thermal or by light)
Diplacement (Single or Double)
Redox
Exothermic (Heat evolved) or endothermic (Heat absorbed).
5. The reaction conditions, like acidic or alkaline.
Drabacks of chemical equations are:
1. It does not indicate the conditions of reaction, i.e., it gives no idea about the pressure, temperature, concentration, presence of catalyst, etc. under which the reaction may occur,
2. It does not indicate whether the reaction is fast or slow.
3. Some reactions occur with explosion. This is not indicated by the chemical equation.
4. It does not tell about the actual amount of the reactants consumed or products formed. It gives only ratio.
A balanced chemical equation gives the following information:
1. The chemical species (reactants) reacting with each other.
2. The products formed in the chemical reaction.
3. The number of molecules of the reactant reacting and the number of molecules of product formed (gives the smallest, whole-number ratio of the moles of reactants and products).
4. The physical state of the reactants and the products like (if mentioned in the chemical equation):
(s) - Solid
(l) - Liquid
(g) - Gas
(aq) - Aqueous state
5. The type of reaction:
Combination
Decomposition (thermal or by light)
Diplacement (Single or Double)
Redox
Exothermic (Heat evolved) or endothermic (Heat absorbed).
5. The reaction conditions, like acidic or alkaline.
Drabacks of chemical equations are:
1. It does not indicate the conditions of reaction, i.e., it gives no idea about the pressure, temperature, concentration, presence of catalyst, etc. under which the reaction may occur,
2. It does not indicate whether the reaction is fast or slow.
3. Some reactions occur with explosion. This is not indicated by the chemical equation.
4. It does not tell about the actual amount of the reactants consumed or products formed. It gives only ratio.
