The balanced equation which have the coefficient 3 in front of any of the reactants is 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O.
Those chemical equations in which number of each atoms pesent in reactant side as well as on product side is always equal to each other.
Let us consider the balanced equations for the given chemical reactions are:
Balanced form of the above reaction will be written as Zn+2HCl → ZnCl₂+H₂ where all atoms are present in equal quantity.
Balanced form of the given reaction will be written as 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O, where coefficient 3 is present in before sulphuric acid and water molecule.
Balanced form of above reation will be written as Fe+ 2AgNO₃ → Fe(NO₃)₂ + 2Ag.
Balnced form of above chemical equation will be represented as C₂H₄O₂ + 2O₂ → 2CO₂ + 2H₂O, and coefficient 3 is not used any where.
The quation which have the coefficient 3 is 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O.
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