REDOC Flashcards

1
Q

What type of elements always retain the same ON?

A

Very electro positive and negative elements like F O and N for electronegative and Grp 1, 2, Al and hydrogen

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2
Q

What is a disproportionation reaction?

A

A reaction where one substance acts as both the OA and RA

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3
Q

Steps to calculate specific ON instead of average?

A
  1. Count the number of free electrons
  2. For every bond, both electrons is assigned to the more electronegative element
  3. Add the number of electrons from step 1 and 2
  4. Subtract this number from the original number of valence to find ON
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4
Q

What are the 5 main redox half equations?

A

Cr2O7- —-> Cr3+
MnO4 —-> Mn2+ (in acidic medium) or MnO2 (in neutral or alkaline sol)
H2O2 —-> H+ (acts as RA) or H20 (when it acts as OR)

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5
Q

What are the steps to balancing redox equations?

A
  1. Make sure that there are the same number of atoms on each side
  2. Add H2O in order to balance the number of O
  3. Add H+ to balance number of H
  4. Add electrons to balance charge on both side
  5. Multiply 2 redox half eqns to make an overall eqn
  6. Eliminate any common terms
  7. Add OH- on both sides of the equation to neutralise the H+ and combine to form H2O ( alkaline and neutral medium)
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