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Chemistry > Inorganic > Flashcards

Inorganic Flashcards

1
Q

Another term for giant covalent

A

Macromolecular

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2
Q

Period 3 oxide insoluble in water

A

Al2O3

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3
Q

Period 3 hydroxide used in medicine

A

Mg(OH)2

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4
Q

Element in group 3 with highest electronegativity

A

Chlorine

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5
Q

Determining the melting point of a sample

Evaluate Impurity

A

Place sample in melting point apparatus

Heat slowly

Lower melting point indicates presence of impurities

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6
Q

What is produces when group 2 metals react with water?

A

Metal hydroxides + hydrogen

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7
Q

How does the solubility of group 2 hydroxides change down the group?

A

increases

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8
Q

What happens to the solubility of group 2 sulfates down the group?

A

Decreases

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9
Q

What is used to convert titanium ore TiO2 to titanium Chloride?

A

Chlorine gas and Carbon

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10
Q

2nd step of Titanium extraction

A

Heat TiCl4 with Mg at 1000’C

TiCl + 2Mg –> Ti + 2MgCl2

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11
Q

What group 2 hydroxides are used to neutralise acids?

A

Calcium hydroxide

Magnesium hydroxide

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12
Q

Where is Calcium hydroxide used to neutralise acids?

A

Neutralise acidic soils in agriculture

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13
Q

Where is magnesium hydroxide used to neutralise acid?

A

Indigestion tablets as an antacid that neutralise stomach acid

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14
Q

How is barium sulphate used in healthcare

A

Coats the oesophogus, stomach and intestines, reflects the X-ray for the organs to show up

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15
Q

What is wet scrubbing?

A

The process of removing SO2 from flue gases

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16
Q

What is used to remove SO2 from flue gas?

How?

A

CaO and CaCO3

CaO is mixed with water and sprayed onto the gases, creating the byproduct CaSO3

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17
Q

Most electronegative element

A

Fluorine

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18
Q

How does electronegativity change down group 7?

A

decreases

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19
Q

How do boiling points change down group 7?

Why?

A

increase

Because elements have more electrons, creating stronger Van DER Waal’s

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20
Q

How does ammonia solubility change down group 7?

A

Decreases

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21
Q

Change of silver halide solubility in ammonia down group 7

A

decreases

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22
Q

What will happen if an elemental halide is added to a halide solution?

Why?

A

The heavier halide will be displaced

Because the lighter halide has a greater preference to be the halide ion because it is electronegative

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23
Q

H2SO4 + F/CL

A

HF / HCl

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24
Q

H2SO4 + Br-

A

Br2 + SO2

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25
Q

H2SO4 + I-

A

I2 + H2S - a toxic chemical which smells like eggs

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26
Q

AgCl colour

A

White precipitate

27
Q

AgBr colour

A

Cream precipitate

28
Q

AgI colour

A

Yellow precipitate

29
Q

Observation of AgCl in ammonia

A

AgCl should redissolve

30
Q

Observation of AgBr in ammonia

A

redissolve slowly and needs a lot of ammonia

31
Q

Observation of AgI in ammonia

A

Does not dissolve

32
Q

What is the reaction of water with chlorine useful for?

A

Water treatment to kill bacteria

33
Q

What happens to the chlorate ion in sunlight?

A

Decompose to produce HCl + O2

34
Q

Risks of using Chlorine for water treatment

A

Cl(g) is toxic

Cl(l) on the skin or eyes causes burns

Chlorine will chlorinate trace organic compounds in water, man of these chlorinated hydrocarbons are carcinogenic

35
Q

Benefits of water treatment using Chlorine

A

Kills harmful bacteria

Increased cancer risk is small, however a choler epidemic would kill many

Forced mass medication prevents thousands of deaths every year

36
Q

What happens when Cl2 is added to sodium hydroxide?

A

You get:

Sodium chlorate
& Sodium Chloride

37
Q

Reaction of Na with water

A

2Na + 2H2O –> 2NaOH + H2

Highly vigorous with cold water

Solution is highly basic

38
Q

Reactions of Mg with water

A

Mg + 2H2O –> Mg(OH02 + H2

Slow with cold water

39
Q

Reaction of Mg with steam

A

Mg +H2O –> MgO + H2

Vigorous reaction and makes Mg burn with a white light

40
Q

Na oxide

A

Na2O

41
Q

Mg oxide

A

MgO

42
Q

Al oxide

A

Al2O3

43
Q

Si oxide

A

SiO2

44
Q

Phosphorus oxide

A

P4O10

45
Q

Sulfur oxides

A

SO2

SO3

46
Q

What are the conditions to make SO3

A

450C,
2atm,
V2O5 catalyst

47
Q

Which period 3 oxides are ionic compounds which can dissolve directly into solution?

A

Na2O

MgO

48
Q

Which period 3 oxide is ionic with a high degree of covalent character, making the lattice difficult to break?

A

Al2O3

49
Q

Which period 3 oxide is macromolcular, non-polar, making it insoluble?

A

SiO2

50
Q

Which period 3 oxides are small ionic compounds which can easily dissolve in water and is polar so reacts readily?

A

P4O10

SO2
SO3

51
Q

Solubility of Na2O and MgO

A

Ionic compounds so can dissolve directly into solution

52
Q

Solubility of Al2O3

A

Ionic with a high degree of covalent character, Making the lattice difficult to break

53
Q

Solubility of SiO2

A

Macromolecular (giant covalent)

Non-polar

Insoluble

54
Q

Solubility of P4O10, SO2 and SO3

A

Small ionic compounds ,can easily dissolve in water

Polar so reacts readily

55
Q

4 Examples of Monodentate ligands

A

H2O - water

NH3 - ammonia

Cl- - chloride

CN- - cyanide

56
Q

2 examples of Bidentate Ligands

A

1,2-diaminoethane

ethanedioate

57
Q

Multidentate ligand example

A

EDTA 4-

58
Q

Coordination number of Cl-

A

4

59
Q

Ligands which form an octahedral shape

A

Water

Ammonia

60
Q

Ligand which forms an tetrahedral shape

A

Chloride

61
Q

Ligands which form square planar

A

Ni, Pd, Pt

62
Q

Ligands which form a linear shape

A

Cu - copper

Ag - silver

Au - gold

63
Q

Tollens Reagent formula

A

[Ag(NH3)2]+

Chemistry (3 decks)

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