Chemical equations

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42 Terms

1
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→ KCl + 2O2 (g)

KClO4

2
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→ CuO (s)

Reacts with metal forming a metal

oxide

Cu (s) + O2 (g)

3
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→ Fe2O3 (s)

Reacts with metal forming a metal

oxide

Fe (s) + 3O2 (g)

4
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Red litmus paper → blue color

Fe2O3 (s) + H2O (l) → Fe(OH)3 (aq)

5
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Blue litmus paper → red color

CO2 (g) + H2O (l) → H2CO3 (aq)

6
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→ CO2 (g)

• Reacts with non metal to form

non-metal oxide

C (s) + O2 (g)

7
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Red litmus paper → blue color

Na + H2O → NaOH + H2

8
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Hydrogen popping

H2 (g) + 2O2 (g) → 2 H2O (g)

9
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Magnesium can react with steam to displace oxygen in

the water molecules

Mg (s) + H2O (g) → MgO (s) + H2 (g)

10
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→ ZnO (s) + H2 (g)

Zn (s) + H2O (g)

11
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→ no reaction

Cu (s) + H2O (g)

12
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→ Al2O3 (s) + 3H2 (g)

2Al (s) + 3H2O (g)

13
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→ ZnCl2 (aq) + H2 (g)

Zinc in hydrochloric acid

Zn (s) + 2HCl (aq)

14
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→ no reaction

Cu (s) + HCl (aq)

15
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→ 2 AlCl3 (s) + 3 H2 (g)

2 Al (s) + 6 HCl (aq)

16
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→ CaO (s) + CO2 (g)

CaCO3 (s)

17
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CO2 (s) + H2O (l)

→ H2CO3 (aq)

Blue litmus paper → red color

18
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→ Ca(OH)2 (aq)

Red litmus paper → blue color

CaO (s) + H2O (l)

19
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BaCO3 → BaO + CO2

Thermal Decomposition

20
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→ Ca(OH)2 (aq)

Red litmus paper → blue color

Preparation of bases

CaO (s) + H2O (l)

21
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→ Ba(OH)2 (aq)

Red litmus paper → blue color

Preparation of bases

BaO (s) + H2O (l)

22
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HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)

Preparation of NaCl

23
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→ NaCl (s) – white residue

Evaporate to dryness: NaCl (aq)

24
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Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)

Preparation of ZnSO4

25
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ZnSO4 (aq) → ZnSO4 (s) – white residue

Evaporate to dryness:

26
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NaOH (aq)

SA

27
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HCl (aq)

SB

28
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NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l)

SA + SB

29
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HCl (aq)

SA

30
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NH4OH (aq)

WB

31
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NH4

+ (aq) + H2O (l) ⇌ H3O+ (aq) + NH3

NH4Cl is an acidic salt

32
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HCN (aq)

WA

33
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NaOH (aq)

SB

34
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HCN (aq) + NaOH (aq) → NaCN (aq) + H2O (l)

WA + SB

35
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NaCN is a basic salt

CN- (aq) + H2O (aq) ⇌ HCN (aq) + OH- (aq)

36
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→ CH3COONH4 (aq) + H2O (l)

Acid with Base Reaction

CH3COOH (aq) + NH4OH (aq)

37
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+ = 5.6 x 10-10

Ka NH4

38
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= 5.6 x 10-10

Kb for CH3COO-

39
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→ CaC2O4 (s) + 2 HCl

Acid with Salt

CaCl2 (aq) + H2C2O4 (aq)

40
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Acid with Carbonate Salts

→ NaCl (aq) + CO2 (g) + H2O (l)

NaHCO3 (aq) + HCl (aq)

41
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→ Cu(OH)2 (s) + Na2SO4 (aq)

* Double displacement reaction

Salts with Bases

CuSO4 (aq) + 2 NaOH (aq)

42
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Salts with Salt

→ AgCl (s) + NaNO3 (aq)

*double displacement reaction

NaCl (aq) + AgNO3 (aq)