AC9: Redox
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What is the formula for Sodium Iodate (III)
NaIO2
What is the formula for sodium iodate (V)
NaIO3
What is the formula for sodium bromate (VII)
NaBrO4
What is the formula for sodium dichromate (VI)
Na2Cr2O7
In terms of electrons, what is the oxidising agent of a reaction
The reactant that receives electrons
In terms of electrons, what is the reducing agent
The reactant to gives electrons / loses electrons
In term of oxidation state, what is the oxidising agent
The reactant that causes the oxidation state of another reactant to increase
Write the 2 half equations of this: Cl2 +2Br- -> 2Cl- + Br2
Cl2 +2e- -> 2Cl- 2Br- -> Br2 + 2e-
To balance MnO4- -> Mn2+ , what is needed to balance the equation
• Water • Electrons
What happens in half equations in alkaline conditions
The H+ are destroyed with OH- to make water
After balancing half equations with the charged in alkaline condition, what should you always look to do
Cancel things out that are present on both sides
What you are given 2 half equation, what do you do to them to find the chemical equation
Add the half equations together
When adding 2 half equations together, what should always cancel out
The electrons
When you need to balance 2 half equations, what thing needs to be the same on one side of the equation as on the other side of the equation
The electrons