Topic 3 -redox Flashcards

1
Q

what is oxidation?

A

is the process of electron loss

  • gain of oxygen
  • loss of hydrogen
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2
Q

What is reduction?

A
  • the process of electron gain.
  • loss of oxygen
  • gain of hydrogen
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3
Q

What is disproportiation?

A

is the name for a reaction where an element in a single species is simultaneously oxidised and reduced.

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4
Q

What is a reducing agent?

A

-it is an alectron donor.

a reducing agent is the species that causes another element reduce. it is itself oxidised in the reaction.

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5
Q

What is an oxidising agent?

A
  • it is an electron acceptor

- an oxidising agent is the species that causes another element to oxidse. it itself reduced in the reaction.

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6
Q

What causes an element in a compound to have a negative oxidation number?

A

being more electronegative

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7
Q

How to name a compound using oxidation numbers

A

Provide the oxidation number of the unknown element e.g. sulfur(vi) oxide for SO3

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8
Q

How to form an equation using oxidation numbers?

A
  • form an ionic half equation for the element that changes oxidation, ignoring other elements
  • balance the charge of the reactants using H+ for acid and OH- for base
  • add water to the products
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