4.9 Oxidation-Reduction (Redox) Reactions Part 2, 4.6 Introduction to Titration Vocab

Includes vocabulary & info on Balancing Redox Reactions in Acid and Basic Solution

What are the 7 steps of balancing Redox Reactions in Acidic Solutions?

What are the 7 steps of balancing Redox Reactions in Acidic Solutions?

1. Write the two unbalanced half-reactions

2. Balance all atoms except for O and H

3. Balance of O by adding H2O molecules

4. Balance for H by adding H ions

5. Balance the charge by adding electrons

6. Cross Multiply to cancel electrons

7. Add half reactions and cancel things that are the same.

What are the common reductions in Acidic Solution? (Hint there are 3)

• Nitrate: NO3^- —> NO

• Permanganate: MnO4^- —> Mn^+2

• Dichromate: Cr2O7^-2 —> Cr^-3

Substances with less positive oxidation states than usual ___.

Oxidizes to raise its oxidation state.

What if you have a choice of two species that can be oxidized?

The metal will be oxidized

What do basic solutions have a high concentration of?

Hydroxide Ions

What is a Redox Titration?

A solution with a known concentration of a species that is easily reduced is added to a solution with an unknown concentration of a species that will be oxidized in the reaction.

How do you know your Redox Tititration is complete?

A color change