Redox Reactions Flashcards

1
Q

Oxidation?

A

Add O/e’ -ve element

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2
Q

Reduction reactions

A

Half reactions that involve gain of e’s

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3
Q

Oxidation reactions

A

Half reactions that involve loss of e’s

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4
Q

Reducing agent is

A

One that is oxidized, donates e’ to each element & helps in reducing them

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5
Q

Oxidizing vs reducing agent

A

Oxidizing agent: accept e’s

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6
Q

Oxidation number

A

It denotes oxidation state of an element based on e’ pair in covalent bond that belongs to more e’ -ve element

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7
Q

Rules of oxidation number

A
  1. In elements, it is 0
  2. Ions with 1 atom, it is = charge on it
  3. In H2O2,Na2O2 ‘O’ has -1
  4. In LiH, NaH ‘H’ is -1
  5. Sum of oxid. no.s = 0
  6. In polyatoms, Sum = total charge
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8
Q

Types of redox reactions

A

Combination
Decomposition
Displacement
Disproportiation

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9
Q

Displacement reaction types

A

Metal: metal gets displaced by another
Non-metal: H displacement

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10
Q

______ are very good reactants

A

Alkali metals & alkaline earth metals

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11
Q

Disproportiation?

A

Same element undergoes 1 oxidation & 1 reduction at same time

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12
Q

Oxidation _______ e’ density

A

Decrease

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13
Q

Electrode potential

A

Tendency of species to remain oxidised/reduced form

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14
Q

-ve E° means _____ reducing agent

A

Stronger

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