What is the oxidation number of chromium in potassium dichromate?
+6
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What is the oxidation number of chromium in a chromium ion?
+3
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So what has chromium undergone when dichromate becomes chromium ion?
Reduction
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Why?
The oxidation number of chromium has reduced from +6 to +3. This means it has gained electrons. Since gain of electrons is reduction, chromium has been reduced.
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In a redox reaction with an alcohol, what would the dichromate ions act as, if they get reduced to chromium ions?
Oxidizing agent
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Other cards in this set
Card 2
Front
What is the oxidation number of chromium in a chromium ion?
Back
+3
Card 3
Front
So what has chromium undergone when dichromate becomes chromium ion?
Back
Card 4
Front
Why?
Back
Card 5
Front
In a redox reaction with an alcohol, what would the dichromate ions act as, if they get reduced to chromium ions?
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