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AS CHEMISTRY > Chapter 4 - Inorganic Chemistry And The Periodic Table > Flashcards

Chapter 4 - Inorganic Chemistry And The Periodic Table Flashcards

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1
Q

What happens to ionisation energy in group 2 as you do down ?
Why ?
(3)

A

Decreases
1- shielding increase
2- distance firm nucleus increases ( can’t attract outermost electron )

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2
Q

What the reaction with O2 produce ( Group 2) ?

A

2 metal oxide

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3
Q

Group 2 + Cl2

A

MCl2

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4
Q

Thermal stability group 2 ?

2

A
  • Becomes more thermally stable as you do down the group as the polarising power decreases .
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5
Q

Group 2 + water ?

A
  • M(OH)2 + H2
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6
Q

General half equation group 2 ?

A

Oxidised : M- M^2+ + 2e-

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7
Q

Reactivity ? Group 2 ?

A

Increases down group

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8
Q

What does group 2 oxide or hydroxide + water produce ?

A

M(OH)2

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9
Q

Group 2 metal + HCl ?

A

MCl2 + H2O

Salt and water !

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10
Q

Solubility of group 2 negative ions ?

A

Increases as you go down !

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11
Q

Solubility of group 2 metals double charge( so4 2-) And CO3 2-) ?
(DD )

A

Solubility decreases as you do down !

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12
Q

Halogens reactivity ?

A

DECREASES as you go DOWN

can’t attract electron enough

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13
Q

Reducing power of Halogens ?

A

INCREASES AS YOU go down

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14
Q

Cold Alkali + Halogen ?

A

Disproportionation

- X2 +2NaOH —> NaOX + NaX + H2O

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15
Q

HOT ALKALI + halogen

A

disproportionation

3X2 + 6 NaOH —> NaXO3 + 5NaX + 3H2O

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16
Q

Displacement reactions in halogens ?

A
  • more reactive ( top halogens ) replace less reactive ones ( bottom)
  • Less reactive one (Br) = Oxidised
  • More reactive one (Cl) = reduced
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17
Q

Group 2/1 +halogen gas
lithium
Mg

A

Group 1 - 2LiF

Group 2-MgCl2

18
Q

Test with silver halogens ?

Ionic equation ?

A

Ag+ + X- —> AgX

19
Q

Silver ions and halogen test results ? Cl / Br / I

What happens if you add diluted Ammonia solution ?
- concentrated ammonia solution ?
6

A

Cl- white
Br - cream
I - yellow

  • dilute ammonia - AgCl = redissolves
  • concentrated ammonia -AgBr= redissolves
  • AgI = toooo insoluble = didn’t redissolves
20
Q

Solubility of halogens in water ?

A

LOW

21
Q

electronegativity of halogen as you go down ?

A

DECREASES

22
Q

Solubility of halogen in organic solvent ?
A) Colour if Br is formed in solution ? Organic solvent?
B) What colour would Iodine be in solutions and organic solvent ?
(4)

A

HIGH
-Br = Orange solution & top layer = orange in organic solvent

-Iodine = Brown mixture & top layer is purple / violet in organic solvent

23
Q

Melting and boiling boing as you go down ( Halogen )

A

INCREASES

  • Vdw increase
  • electron shells increase
24
Q

Test for carbonates ?

2

A
  • HCl = fizzing
25
Q

Test for CO2

2

A

Limewater cloudy

26
Q

Test for sulphates ?

2

A

HCl and BaCl2

- white ppt

27
Q

Test for ammonium ions ?

3

A

Litmus paper + NaOH and warm

- should turn red —>Blue of ammonium compound is present …

28
Q

Test for ammonia

A

Concentrated H2SO4

-white smoke

29
Q

Li flame colour ?

1

A
  • crimson
30
Q

Sodium flame colour ?

A

Yellow

31
Q

K+ flame colour ?

A

-lilac

32
Q

Ca2+ flame colour

A

-orange red flame

33
Q

Cu2+ flame colour ?

A
  • green !
34
Q

Rb flame test ?

A
  • red
35
Q

Caesium flame test ?

A

Blue

36
Q

Sr flame test ?

A

-crimson

37
Q

Barium flame test ?

A
  • green
38
Q

How to conduct a flame test ?

3

A
  • mix compound with HCl
  • heat nichrome or platinum wire in hot Bunsen flame to clean it
  • dip wire into compound acid mixture and then place into roaring blue flame and observe colour change
39
Q

Cl2 + H2O ?

3

A
  • HCl + HclO

HClO + H2O —> ClO- + H3O+

40
Q

Reaction of group 1 halides with concentrated sulphuric acid ?
(4)
Trend ?
Whyyy?

A
  • reducing power increases ! They get more oxidised as you go down
  • the ions get bigger ( electrons further away )
  • shielding increases
  • hence they become more oxidised and reducing power increases !
41
Q

group 2 carbonate combustion products ?

A
  • metal oxide , CO2

AS CHEMISTRY (12 decks)

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