Organics

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  • Created by: theya4
  • Created on: 28-11-13 17:53
What happens to halogen boiling points as you move down the group?
It increases
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What happens to electronegativity as you move down the group?
It decreases
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Define electronegativity
The ability of an atom to attract the bonding pair of electrons towards itself
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What do halogens do when the react?
They gain electrons
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What happens to an atoms ability to oxidise as it moves down the group?
It decreases.
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What kind of reactions to halegons undergo?
Displacement reactions
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What will a halogen do to a halide below it in the periodic table?
It will displace it.
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What is the test for Halide ions?
Add dilute nitric acid, then add silver nitrate.
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What precipitate will be shown when fluoride is dissolved in silver nitrate?
No precipitate
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What precipitate will be shown when chloride is dissolved in silver nitrate?
White precipitate
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What precipitate will be shown when bromide is dissolved in silver nitrate?
Cream precipitate
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What precipitate will be shown when iodide is dissolved in silver nitrate?
Yellow precipitate
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How can you check the results of the first test for halide ions?
Dissolve the precipitates in ammonia
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What happens to the precipitate of chloride ions and silver nitrate when dissolved in ammonia?
The precipitate will dissolve in dilute ammonia
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What happens to the precipitate of bromide ions and silver nitrate when dissolved in ammonia?
The precipitate will dissolve in concentrated ammonia
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What happens to the precipitate of iodide ions and silver nitrate when dissolved in ammonia?
The precipitate is insoluble in concentrated ammonia
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What happens to the reducing power of halide ions as you go down the group?
The reducing power increases as you go down the group
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What does the halide ion need to do in order to reduce something?
It must lose an electron
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What is the equation for the reaction between NaF and H2SO4
NaF + H2SO4 = NaHSO4 + HF
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What is the equation for the reaction between NaCl and H2SO4
NaCl + H2SO4 = NaHSO4 + HCl
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Equation for SodiumBromide and Sulfuric acid 1st step
Step one NaBr + H2SO4 = NaHSO4 + HBr
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Other cards in this set

Card 2

Front

What happens to electronegativity as you move down the group?

Back

It decreases

Card 3

Front

Define electronegativity

Back

Preview of the front of card 3

Card 4

Front

What do halogens do when the react?

Back

Preview of the front of card 4

Card 5

Front

What happens to an atoms ability to oxidise as it moves down the group?

Back

Preview of the front of card 5
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