2.5 Balanced equations and related calculations

• SO4 2- = sulfate
• NO3 - = nitrate
• PO4 3- = phosphate
• CO3 2- = carbonate
• OH - = hydroxide
• Cr2O7 2- = dichromate
• S2O3 2- = thiosulfate
• NH4 + = ammonium
• MnO4 - = manganate
• If a complex ion occurs on both sides of the equation, don't split it up into separate ions.
• Ionic equations are a special type of chemical equations that focus on the dissolved ions that undergo chemical changes during aqueous reactions.