Need help with oxidation and reduction reactions

[carloscharlie]

Problem is KClO₃ + HBr > Br₂ + H₂O + KCl
What are the oxidation and reduction reactions that take place before balancing?
Thanks!

[Zedekiah]

Oxidation is loss and reduction is gain. Oil Rig.

Writing the first reaction out, you get :

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6H+         +     KClO3    +       6e-        -->          KCl        + 3 H2O

Potassium chlorate is gaining electrons. This is the reduction half reaction.

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3(2Br-      -->      Br2     + 2e-)

Bromide is losing electrons. Therefore, this is the oxidation half reaction.


The overall reaction :

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6 HBr  +   KClO3     -->    3 H2O    +   KCl