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Balancing Chemical Equations

Learn about balancing chemical equations and start balancing online at https://www.easycalculation.com/chemistry/balancing-equations.php

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Balancing Chemical Equations

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  1. Balancing Chemical Equations

  2. Chemical Equations • The chemical reactions are represented by Chemical Equations. • It has two parts : 1. Reactants (Left hand side) 2. Products (Right hand side)

  3. Balancing Chemical Equations • A chemical equation needs to be balanced in order to obey the “Law of Conservation of Energy”. • Law of Conservation of Energy states that matter can never be created, nor destroyed. • Hence, we balance equations by adding coeffiecients in front of reactants and products.

  4. How to Balance Chemical Equation? Step 1 : Write the Formula for the equation. Step 2 : Compare the number of atoms in left side with the right side. Step 3 : Analyse where to place the coefficients, so as to make left and right side equal. Step 4 : Verify finally, if all the atoms in left and right side are equal.

  5. Rules • Only the coefficients should be changed. • Subscripts should not be changed. Changing it will change the compound. • The coefficients should be whole numbers • The lowest possible whole number should be used as coefficients.

  6. Example 1 Consider an equation, H2 + O2 = H2O LHS H = 2, O = 2, RHS H = 2, O = 1 O O H H H H H O H

  7. Balancing In order to balance, we now add 2 to the RHS, making it as 2H2O, Now, equatin becomes as H2 + O2 = 2H2O LHS, H = 2, O =2 RHS, H= 4, O= 2 O O O H H H O H O H H

  8. Balancing H is not equal , hence add 2 to the H of LHS, forming 2H2 + O2 = 2H2O H H O O O H H O O H H H H

  9. Example 2 Ba3N2 + H2O → Ba(OH)2 + NH3 LHS RHS B a = 3 Ba = 1 N = 2 N = 1 H = 2 H = 5 O = 1 O = 2

  10. Step 1 : Adding 3 to Ba in RHS, we have Ba3N2 + H2O → 3Ba(OH)2 + NH3 LHS RHS Ba = 3 Ba = 3 N = 2 N = 1 H = 2 H = 9 O = 1 O = 6

  11. Step 2 : Adding 2 to N in RHS, we have Ba3N2 + H2O → 3Ba(OH)2 + 2NH3 LHS RHS Ba = 3 Ba = 3 N = 2 N = 2 H = 2 H = 12 O = 1 O = 6

  12. Step 3 : Adding 6 to H2O in RHS, we have Ba3N2 + 6H2O → 3Ba(OH)2 + 2NH3 LHS RHS Ba = 3 Ba = 3 N = 2 N = 2 H = 12 H = 12 O = 6 O = 6 Hence, it is balanced.

  13. You can find it more easier without • guessing,

  14. Click the compounds you want from the table and click calclate, you will yield the balanced equation from the chemicalequation balancer. https://www.easycalculation.com/chemistry/balancing-equations.php

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