Problem: Write the net ionic equation for the reaction that occurs when aqueous solutions of
magnesium sulphate (MgSO ) and4sodium oxalate (Na C O ) ar2 2ix4d.
(PUT A LINE HERE)
Writing Net Ionic Equations
1. Write the balanced molecular equation.
2. Write the ionic equation showing the strong electrolytes completely dissociated into cations
3. Cancel the spectator ions on both sides of the ionic equation.
4. Check that charges and number of atoms are balanced in the net ionic equation.
Acid Base Reactions
Acids are identified by their sour tastes, their ability to react with a variety of metals and carbonate
minerals. From a chemist’s standpoint, an acid can be defined as a substance that provides hydrogen
ions (H ) in aqueous solutions. A strong acid completely ionizes in a water solution:
HCl (aq) (H 02 H (aq)+ Cl (aq)
A weak acid, on the other hand, does not go towards completion and is also a weak electrolyte. A
example is acetic acid: HC 2 3 2 (aq) ↔ H (aq)+ C2 3 2 (aq) .
Types of Acids
HCl H + Cl : Strong electrolyte, strong acid
HNO 3 + NO : Stron3 electrolyte, strong acid
CH 3OOH ↔ H + CH COO : We3k electrolyte, weak acid
H2SO4 H+ + HSO4- : Strong electrolyte, strong acid
HSO ↔4H + SO + 42- : Weak electrolyte, weak acid
H 3O ↔4H+ + H PO : W2ak 4lectrolyte, weak acid
H PO ↔ H+ + HPO 2- : Weak electrolyte, weak acid
2 4 4
HPO 42-↔ H + PO 43-: Weak electrolyte, weak acid
From a practi