Oxidation, reduction and redox equations common mistakes

Common mistakes

• Confusing oxidation with reduction

  Students often confuse oxidation with reduction.

  Fix itRemember that oxidation is an increase in oxidation state, while reduction is a decrease.

• Confusing oxidation with reduction

  Students often confuse oxidation (increase in oxidation state) with reduction (decrease in oxidation state).

  Fix itRemember that reduction is characterized by a decrease in oxidation state, while oxidation involves an increase.

• Incorrect assignment of oxidation states

  Students often forget the oxidation state rules for specific elements, such as transition metals.

  Fix itReview the standard rules for oxidation states, especially for transition metals and their variable oxidation states.

• Confusing oxidising and reducing agents

  Students often misidentify oxidising agents as reducing agents and vice versa.

  Fix itRemember that oxidising agents gain electrons and reducing agents lose electrons.

• Confusing Oxidation and Reduction

  Students often confuse oxidation (loss of electrons) with reduction (gain of electrons).

  Fix itRemember that oxidation involves an increase in oxidation state, while reduction involves a decrease.

• Confusing oxidation with reduction

  Students often confuse oxidation (loss of electrons) with reduction (gain of electrons).

  Fix itRemember: Oxidation is loss (OIL) and Reduction is gain (RIG) of electrons.

• Incorrectly balancing charges

  Students often forget to balance the charges in redox equations.

  Fix itAlways ensure that the total charge on both sides of the equation is equal after balancing atoms.

• Incorrectly balancing redox equations

  Students often forget to balance both mass and charge.

  Fix itAlways check that the number of atoms and the total charge are balanced on both sides of the equation.