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What are Stoichiometric Coefficients ?

 With every chemical reaction is associated a chemical equation which is obtained by balancing the atoms of each of  the atomic species involved in the reaction. The initial constituents which start the reaction are called the reactants and the final constituents which are formed by chemical reaction with the rearrangement of atoms and electrons are called the products. The reaction between the reactants, hydrogen and oxygen , to form the product water can be expressed as, 

                           H2 + 0.5O2  <=========>    H2O

The equation indicates that one mole of  hydrogen and half a mole of oxygen combine to form one mole of water. The reaction can also proceed in the reverse direction. The coefficients 1, 1/2 , 1 in chemical equation are called Stoichiometric Coefficients. 




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