All chemistry equations to memorise

studied byStudied by 8 people
5.0(1)
Get a hint
Hint

Sterilisation of water

1 / 82

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

83 Terms

1

Sterilisation of water

Cl2(g) + H2O(l) ⇌ HCl(aq) + HClO (aq) (as HClO kills bacteria)

New cards
2

Reaction of Cl with water in sunlight

2Cl2(g) + 2H2O(l) ⇌ 4HCl(aq) +O2(g) (chlorine is rapidly lost so musts constantly be supplied)

New cards
3

Solid Cl compound added to water instead of gas

NaClO (s) + H2O ⇌HClO(aq) + Na+(aq) +OH-(aq)

New cards
4

Reaction of Cl2 with NaOH

Cl2(G) + 2NaOH(aq) → NaClO(aq) + NaCl(aq) + H2O(l) (reaction involved in synthesis of bleach)

New cards
5

Decomposition of sodium hydrogencarbonate

2NaHCO3(s) → Na2CO3(s) +H2O(l) +CO2(g)

New cards
6

Reaction of Cl2 with NaOH

3Cl2(aq) + 6NaOH → 5NaCl + NaClO3 +3H2O

New cards
7

Reaction of Mg with steam

mg(s) +H2O(g) → MgO +H2 (reacts vigorously)

New cards
8

Reaction of Mg with H2O(l)

Mg(s) + H2O(l) → Mg(OH)2(aq) +H2(g)

New cards
9

Reaction of Ca with H2O(l)

Ca(s) + H2O(l) → Ca(OH)2(aq) +H2(g)

New cards
10

Reaction of Sr with H2O(l)

Sr(s) + H2O(l) → Sr(OH)2(s) +H2(g)

New cards
11

Reaction of Ba with H2O(l)

Ba(s) + H2O(l) → Ba(OH)2(s) +H2(g)

New cards
12

How is Mg used to extract Ti?

TiO2(s) +2C(s) +2Cl2(g) → TiCl4(l) +2CO(g), TiCl4(l) +2Mg(s) →Ti(s) + 2MgCl2(s)

New cards
13

Reaction of Cl- with H2SO4

NaCl + H2SO4 →NaHSO4 +HCl

New cards
14

Reactions of Br- with H2SO4

NaBr + H2SO4 →NaHSO4 +HBr, 2HBr + H2SO4 → SO2 +2H2O +Br2

New cards
15

Reactions of I- with H2SO4

NaI + H2SO4 → NaHSO4 + HI, 2HI + H2SO4 → I2 +SO2 + 2H2O, 6HI + H2SO4 → 3I2 + S + 4H2O, 8HI + H2SO4 → 4I2 + H2S + 4H2O

New cards
16

Reactions inside a catalytic converter

2CO +2NO → 2CO2 +N2, C8H18 +25NO →12.5N2 + 8CO2 + 9H2O

New cards
17

Haber Process

N2 +3H2 ⇌ 2NH3

New cards
18

Reactions in a Lithium cell

Li+ +CoO2 +e- → LiCoO2, Li+ +e- → Li Overall: Li +CoO2 →Li+(CoO2)-

New cards
19

Reactions in a Fuel cell

2H2(g) + 4OH-(aq) → 4H2O(l) +4e-, O2(g) +2H2O(l) +4e- → 4OH-(aq) Overall: 2H2 + O2(g) → 2H2O(l)

New cards
20

Free radical substitutions

Cl2 → 2Cl●, CH3CH3 + CL● → ●CH2CH3 + HCl, ●CH2CH3 +Cl2 →CH3CH2Cl + ●Cl,●Cl +●Cl → Cl2

New cards
21

Ozone depletion

Cl● + O3 → CLO● +O2, ClO● + O3 → 2O2 + Cl●

New cards
22

Formation of biodiesel

Triglyceride + 3CH3OH →(NaOH) 3 fatty acids (methyl esters) + glycerol

New cards
23

Reaction of sodium with water

2Na(s) + 2H2O(l) → 2NaOH(aq) + H2O(g)

New cards
24

Reaction of sodium with oxygen

4Na(s) +O2(g) →2Na2O(s)

New cards
25

Reaction of magnesium with oxygen

2Mg(s) +O2(g) → 2MgO(s)

New cards
26

Reaction of aluminum with oxygen

4Al(s) + 3O2(g) →2Al2O3(s)

New cards
27

Reaction of silicon with oxygen

Si(s) + O2(g) → SiO2(s)

New cards
28

Reaction of phosphorus with oxygen

4P(s) +SO2(g) →P4O10(s)

New cards
29

Reaction of sulphur with oxygen

S(s) +O2(g) →SO2(g)

New cards
30

Reaction of sodium oxide with water

Na2O(s) + H2O → 2NaOH (alkaline solution)

New cards
31

Reaction of magnesium oxide with water

MgO(s) + H2O(l) → Mg(OH)2(aq) (weak alkaline solution)

New cards
32

Reaction of phosphorus oxide with water

P4O10(s) + H2O(l) → H3PO4(aq) (strong acid)

New cards
33

Reaction of sulphur dioxide with water

SO2 (g) + H2O(l) → H2SO3 (aq) (strong acid)

New cards
34

Reaction of sulphur trioxide with water

SO3(g) + H2O(l) → H2SO4(aq) (strong acid)

New cards
35

Reaction of sodium oxide with HCl

Na2O(s) +2HCl → 2NaCl + H2O

New cards
36

Reaction of Magnesium oxide with HCl

MgO(s) + 2HCl (aq) → MgCl2 +H2O (used to neutralise XS stomach acid)

New cards
37

Reaction of magnesium hydroxide with HCl

Mg(OH)2(s) + 2HCl(aq) → MgCl2 (aq) +2H2O (used to neutralise XS stomach acid)

New cards
38

Reaction of aluminium oxide with H2SO4

Al2O3(s) + 3H2SO4(aq) → Al2(SO4)3 + 3H2O

New cards
39

Reaction of aluminium oxide with NaOH

Al2O3 + 2NaOH + 3H2O(l) → 2NaAl(OH)4 (white precipitate)

New cards
40

Reaction of silicon oxide with NaoH

SiO2(s) +2NaOH(aq) → Na2SiO3(aq) + H2O(l)

New cards
41

Reaction phosphorus oxide with NaOH

P4O10(s) + 12NaOH → 4Na3PO4 + 6H2O(l)

New cards
42

Reaction of sulphurdioxide with NaOH

SO2(g) + 2NaOH(aq) → Na2SO3 + H2O(l)

New cards
43

Reaction of sulphurtrioxide with NaOH

SO3(g) + 2NaOH(aq) → Na2SO4(aq) + H2O

New cards
44

Redox titration half equation of MNO4-

MnO4-(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(aq)

New cards
45

Redox titration half equation of Cr2O72-

Cr2O7- + 14H+ + 6e- → 2Cr3+ + 7H2O

New cards
46

Contact Process

1) V2O5 + SO2 —> V2O4 +SO3

2) V2O4 + ½ O2 —> V2O5 (vanadium oxide used as catalyst for manufacture of sulphuric acid)

New cards
47

Iron acting as a catalyst

S2O82- + 2Fe2+ → 2SO42- + 2Fe3+ , 2I- + 2Fe3+ → I2 + 2Fe2+

New cards
48

Reaction of Mg with O2

2Mg(s) + O2(g) → 2MgO(s)

New cards
49

Reaction of Ca with O2

2Ca(s) + O2(g) → 2CaO(s)

New cards
50

Reaction of Sr with O2 (to form strontium(II)oxide)

2Sr(s) + O2(g) → 2SrO(s)

New cards
51

Reaction of Sr with O2 (to form strontium(IV) oxide

Sr(s) + O2(g) → SrO2(s)

New cards
52

Reaction of Ba with O2 (to form Ba(II) oxide)

2Ba(s) + O2(g) → 2BaO(s)

New cards
53

Reaction of Ba with O2 (to form Ba(IV) oxide)

Ba(s) + O2(g) → BaO2(s)

New cards
54

Reaction of Mg with HCl

Mg + 2HCl → MgCl2 + H2

New cards
55

Reaction of Ca with HCl

Ca + 2HCl → CaCl2 +H2

New cards
56

Reaction of Sr with HCl

Sr + 2HCl →SrCl2 + H2

New cards
57

Reaction of Ba with HCl

Ba + 2HCl → BaCl2 + H2

New cards
58

Reaction of Mg with H2SO4

Mg + H2SO4 → MgSO4 +H2

New cards
59

Reaction of Ca with H2SO4

Ca + H2SO4 → CaSO4 +H2

New cards
60

Reaction of Sr with H2SO4

Sr + H2SO4 → SrSO4 +H2

New cards
61

Reaction of Ba with H2SO4

Ba + H2SO4 → BaSO4 +H2

New cards
62

Reaction of calcium oxide with water

CaO + H2O → Ca(OH)2

New cards
63

Reaction of strontium oxide with water

SrO + H2O → Sr(OH)2

New cards
64

Reaction of bariumoxide with water

BaO + H2O → Ba(OH)2

New cards
65

General equation for carbonate + HCl

Carbonate + dilute HCl → chlorine + water + carbondioxide

New cards
66

General equation for carbonate and H2SO4

Carbonate + dilute H2SO4 → sulphate + water + CO2

New cards
67

General equation fro hydroxide + HCl

Hydroxide + dilute HCl → chloride + water

New cards
68

General equation for hydroxide + H2SO4

Hydroxide + dilute H2SO4 →sulphate + water

New cards
69

General equation for oxide + HCl

Oxide + dilute HCl → Chloride + water

New cards
70

General equation for oxide + H2SO4

Oxide + dilute H2SO4 → sulphate + water

New cards
71

General equation for oxide + water

Oxide + water → hydroxide

New cards
72

Complete ligand substitution of cobalt hexaaqua complex with NH3

[Co(H2O)6]2+ (aq) + 6NH3 (aq) → [Co(NH3)6]2+(aq) + 6H2O(l) pink → yellow

New cards
73

Partial ligand substitution of cobalt hexaaqua complex with OH-

[Co(H2O)6]2+ (aq) + 2OH-(aq) → Co(H2O)4(OH)2 + 2H2O(l) pink → blue ppt

New cards
74

Partial ligand substitution of copper hexaaqua complex with OH-

[Cu(H2O)6]2+ + 2OH- → Cu(OH)2(H2O)4 (s) + 2H2O blue ppt → light blue ppt

New cards
75

Partial ligand substitution of Cu(OH)2(H2O)4

Cu(OH)2(H2O)4 + 4NH3 → [Cu(NH3)4(H2O)2]2+ + 2H2O + 2OH- light blue ppt → deep blue solution

New cards
76

Complete ligand substitution of copper hexaaqua complex with Cl-

[Cu(H2O)6]2+ +4Cl- → [CuCl4]2- + H2O blue → yellow

New cards
77

Complete ligand substitution of cobalt hexaaqua complex with Cl-

Co(H2O)6]2+ +4Cl- → [CoCl4]2- + H2O pink → blue

New cards
78

Formation of NO2+

HNO3 +H2SO4 —> NO2+ + H3O+ + 2HSO4

New cards
79

Reaction in alkaline hydrogen oxygen fuel cell

1) 2H2O + 2e- → 2OH- +H2

2) O2 +2H2O +4e- —> OH-

New cards
80

Reaction of aluminum oxide with base

Al2O3 + 2OH- + 3H2O —> 2Al(OH)4-

New cards
81

Reaction of aluminum oxide with acid

Al2O3 + 6H+ —> 2Al3+ + 3H2O

New cards
82

Autocatalysis

Product of the reaction catalyses the reaction

New cards
83

Iron acting as a catalyst during the Haber Process

New cards

Explore top notes

note Note
studied byStudied by 20 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 23 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 31 people
Updated ... ago
5.0 Stars(3)
note Note
studied byStudied by 12 people
Updated ... ago
4.5 Stars(2)
note Note
studied byStudied by 9 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 29 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 40 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 12 people
Updated ... ago
4.0 Stars(1)

Explore top flashcards

flashcards Flashcard21 terms
studied byStudied by 229 people
Updated ... ago
4.7 Stars(6)
flashcards Flashcard56 terms
studied byStudied by 12 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard44 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard35 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard29 terms
studied byStudied by 3 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard154 terms
studied byStudied by 4 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard60 terms
studied byStudied by 9 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard108 terms
studied byStudied by 1 person
Updated ... ago
5.0 Stars(1)