What information do you get from balanced chemical equations
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What information do you get from a balanced chemical equation?
CBSE Class 10Class 10 Science
chemicalequationscbse

prasanna
Oct '16
A balanced chemical equation can provide the following information :
1) The reactants and products through their symbols and formulae.
2) The ratio of molecules of reactants and products.
3) As molecular masses are expressed in unified mass (u), the relative masses of reactants and products are known from the equation.
4) If the masses are expressed in grams then the equation also gives the molar ratios of reactants and products.
5) If gases are involved, we can equate their masses to their volumes and calcu-late the volumes or those gases liberated at given condition of temperature and pressure using molar mass and molar volume relationship.
6) Using molar mass and Avagadro's number we can calculate the number of molecules and atoms of different substances from the equation.
What is a chemical equation ?
● A chemical equation is the symbolic representation of a chemical change.
Why we should balance a chemical equation?
● A chemical equation should always be balanced according to the Law of conservation of mass.
What information do you get from balanced chemical equation?
● A balanced chemical equation explains about reactants, products and their physical states during the reaction.
●A chemical equation gives information about the reactants and products to their symbols and formulae.
●It gives the ratio of molecules of reactants and products.
●It gives a relative masses of reactants and products.
●If the masses are expressed in grams, then the equation also give the molar ratios of reactants and products.
●We can calculate the volumes of gases liberated at a given condition of temperature and pressure using molar mass and molar volume relationship.