1. K 3 PO 4 + HCl KCl + H 3 PO 4 = K = = PO 4 = = H = = Cl = K PO 4 K K ClH PO 4 H H H Cl K

2. K 3 PO 4 + HCl KCl + H 3 PO 4 1. Count the number of atoms of each element before the reaction and after the reaction. = K = = PO 4 = = H = = Cl = K PO 4 K K ClH PO 4 H H H Cl K

3. K 3 PO 4 + HCl KCl + H 3 PO 4 1. Count the number of atoms of each element before the reaction and after the reaction. 3 = K = 1 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 K PO 4 K K ClH PO 4 H H H Cl K

4. K 3 PO 4 + HCl KCl + H 3 PO 4 2. Balance the Potassium atoms before and after the reaction by putting a 3 in front of the Potassium Chloride ( KCl ) in the reactant... 3 = K = 1 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 K PO 4 K K ClH PO 4 H H H Cl K

5. K 3 PO 4 + HCl 3KCl + H 3 PO 4 2. Balance the Potassium atoms before and after the reaction by putting a 3 in front of the Potassium Chloride ( KCl ) in the reactant... 3 = K = 1 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 K PO 4 K K ClH PO 4 H H H Cl K

6. K 3 PO 4 + HCl 3KCl + H 3 PO 4 2. Balance the Potassium atoms before and after the reaction by putting a 3 in front of the Potassium Chloride ( KCl ) in the reactant... 3 = K = 1 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 K PO 4 K K ClH PO 4 H H H Cl K K K

7. K 3 PO 4 + HCl 3KCl + H 3 PO 4 2. Balance the Potassium atoms before and after the reaction by putting a 3 in front of the Potassium Chloride ( KCl ) in the reactant... 3 = K = 1 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 K PO 4 K K ClH PO 4 H H H Cl K K K

8. K 3 PO 4 + HCl 3KCl + H 3 PO 4 2. Balance the Potassium atoms before and after the reaction by putting a 3 in front of the Potassium Chloride ( KCl ) in the reactant... 3 = K = 1 3 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 So Now the potassium is balanced... K PO 4 K K ClH PO 4 H H H Cl K K K

9. K 3 PO 4 + HCl 3KCl + H 3 PO 4 But the Chlorine in KCl has also been changed… there are now 3 atoms of Chlorine also 3 = K = 1 3 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 K PO 4 K K ClH PO 4 H H H Cl K K K

10. K 3 PO 4 + HCl 3KCl + H 3 PO 4 But the Chlorine in KCl has also been changed… there are now 3 atoms of Chlorine also 3 = K = 1 3 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K

11. K 3 PO 4 + HCl 3KCl + H 3 PO 4 3. Now let’s move on and balance the hydrogen (since the Phosphates are already balanced). Do this by putting a 3 in front of the Hydrochloric Acid (HCl) in the reactants... 3 = K = 1 3 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K

12. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 3. Now let’s move on and balance the hydrogen (since the Phosphates are already balanced). Do this by putting a 3 in front of the Hydrochloric Acid (HCl) in the reactants... 3 = K = 1 3 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K

13. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 3. Now let’s move on and balance the hydrogen (since the Phosphates are already balanced). Do this by putting a 3 in front of the Hydrochloric Acid (HCl) in the reactants... 3 = K = 1 3 1 = PO 4 = 1 1 = H = 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

14. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 3. Now let’s move on and balance the hydrogen (since the Phosphates are already balanced). Do this by putting a 3 in front of the Hydrochloric Acid (HCl) in the reactants... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

15. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Now the hydrogen is balanced. But the Chlorine in the HCl is also changed… There are now 3 atoms of chlorine in the reactants 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

16. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Now the hydrogen is balanced. But the Chlorine in the HCl is also changed… There are now 3 atoms of chlorine in the reactants 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

17. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Now the hydrogen is balanced. But the Chlorine in the HCl is also changed… There are now 3 atoms of chlorine in the reactants 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 Looks like the chlorine atoms balanced out also!! K PO 4 K K ClH PO 4 H H H Cl K K K H H

18. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Check to make sure everything is balanced before and after the reaction. 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

19. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Check to make sure everything is balanced before and after the reaction. 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

20. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Check to make sure everything is balanced before and after the reaction. 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

21. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Check to make sure everything is balanced before and after the reaction. 3 = K = 1 3 1 = PO 4 = 1 33 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

22. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 Check to make sure everything is balanced before and after the reaction. 3 = K = 1 3 1 = PO 4 = 1 33 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

23. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

24. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

25. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )… 3 molecules of Hydrochloric Acid (HCl) will react... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

26. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )… 3 molecules of Hydrochloric Acid (HCl) will react... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

27. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )… 3 molecules of Hydrochloric Acid ( HCl ) will react… to form 3 molecules of Potassium Chloride (KCl)... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

28. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )… 3 molecules of Hydrochloric Acid ( HCl ) will react… to form 3 molecules of Potassium Chloride (KCl)... 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

29. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )… 3 molecules of Hydrochloric Acid ( HCl ) will react… to form 3 molecules of Potassium Chloride (KCl)… and 1 molecule of Phosphoric Acid (H 3 PO 4 ) 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H

30. K 3 PO 4 + 3HCl 3KCl + H 3 PO 4 So this means that for every 1 molecule of Potassium Phosphate (K 3 PO 4 )… 3 molecules of Hydrochloric Acid ( HCl ) will react… to form 3 molecules of Potassium Chloride (KCl)… and 1 molecule of Phosphoric Acid (H 3 PO 4 ) 3 = K = 1 3 1 = PO 4 = 1 3 1 = H = 3 3 1 = Cl = 1 3 K PO 4 K K ClH PO 4 H H H Cl K K K H H