1. Balancing Equations

2. Step 1 Write the skeleton equation.

3. Step 2 Balance each element by placing coefficients in front of the chemical formulas. Balance in this order: – metals – non-metals – hydrogen – oxygen last “M”et a “n”on “h”airy “o”xen

4. Step 3 Select coefficients that will give the same number of atoms on each side of the equation. If you have an odd number of oxygen atoms, multiply the coefficient by 2 first to make it an even number. Then try to balance the equation.

5. Step 4 Check all other elements to see whether the equation is balanced. Other elements may have become unbalanced. Make adjustments to balance all the elements.

6. Tips for Balancing Hydrocarbons If you have a hydrocarbon reaction such that when you divide the subscript for the number of hydrogens by two and the answer is odd or a fraction, then first start the balancing process out by making the hydrocarbon’s coefficient two. Ex: C 2 H 6 + O 2  CO 2 + H 2 O (6 ÷ 2 = 3, therefore multiply the hydrocarbon by 2 before balancing.) Next, balance the CO 2, then H 2 O, then O 2. 2467

7. Balance these equations. 1. HgO  Hg+O 2 2. Mg +O 2  MgO 3. KClO 3  KCl+O 2 4. AgNO 3 +H 2 S  Ag 2 S +HNO 3

8. Balance these equations. 5. Al(OH) 3 +H 2 SO 4  Al 2 (SO 4 ) 3 + H 2 O 6. Zn(OH) 2 +H 3 PO 4  Zn 3 (PO 4 ) 2 + H 2 O 7.FeCl 3 +NaOH  Fe(OH) 3 + NaCl 8.C 3 H 6 O 3 + O 2  CO 2 + H 2 O Begin your Balancing worksheet-finish for hw 2666