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Chemistry > Reaction for ___________ > Flashcards

Reaction for ___________ Flashcards

1
Q

Contact process - (1)Production of sulphur dioxide by burning sulphur , iron pyrite

A

S(s) + O2 (g) → SO2(g)
4FeS2 + 11O2 → 2Fe2O3 + 8SO2

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2
Q

Contact process - (2)Catalytic oxidation of sulphur dioxide to sulphur trioxide

A

2SO2(g) + O2(g) ⇌ 2SO3(g)
[V2O5][450-500°][1-2 atmos.]

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3
Q

Contact process -(3) Absorption of sulphur trioxide in 98% sulfuric acid to give oleum or pyrosulfuric acid

A

H2SO4 + SO3(g) → H2S2O7(l)

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4
Q

Contact process - (4)Dilution of oleum with calculated amount of soft water to give sulfuric acid of the desired concentration

A

H2S2O7(l) + H2O(l) → 2H2SO4

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5
Q

Sulfuric acid as a non volatile acid

A

NaCl + H2SO4[conc]→ NaHSO4 + HCl
NaNO3 + H2SO4[conc]→ NaHSO4 + HNO3[vap]

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6
Q

Oxidation of Carbon by Sulfuric acid

A

C + 2H2SO4→ CO2+H2O+2SO2

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7
Q

Oxidation of sulphur by sulfuric acid

A

S+ 2H2SO4→3SO2+H2O

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8
Q

Fixation of atmospheric nitrogen by lightning discharge

A

N2 + O2→2NO

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9
Q

Laboratory preparation of nitric acid by nitre or chile salt petre

A

KNO3+H2SO4(conc)→[<200∘C]KHSO4+HNO3
NaNO3+H2SO4(conc)→[<200∘C]NaHSO4+HNO3

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10
Q

Ostwald’s process - (1)Catalytic oxidation of ammonia to nitric oxide

A

4NH3 + 5O2 ↔ 4NO + 6H2O +21.5 Kcal

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11
Q

Ostwald’s process - (2)Oxidation of nitric oxide to nitrogen dioxide

A

2NO + O2 ↔2 NO2

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12
Q

Ostwald’s process - (3)Nitrogen dioxide to nitric acid by absorption in water in presence of excess air

A

4NO2 + 2H2O + O2-> 4HNO3

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13
Q

Decomposition of nitric acid

A

4HNO3->4NO2 + 2H2O + O2

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14
Q

Oxidation of carbon by nitric acid

A

C + 4HNO3→ CO2+2H2O+4NO2

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15
Q

Oxidation of sulphur by nitric acid

A

S + 6HNO3→ H2SO4+H2O+6NO2

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16
Q

Oxidation of copper by nitric acid

A

Cu + 4HNO3
→Cu(NO3)2+2H2O+2NO2

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17
Q

Aqua Regia

A

HNO3[conc]+HCl[conc]→2H2O+NOCl+2[Cl]
Au/Pt+3/4[Cl]→AuCl3/PtCl4

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18
Q

Laboratory preparation of ammonia

A

2NH4Cl+Ca(OH)2→CaCl2+H2O+2NH3

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19
Q

Why is H2SO4[conc] not used as a drying agent in the laboratory preparation of ammonia?

A

2NH3+H2SO4→(NH4)2SO4

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20
Q

Why is P2O5 not used as a drying agent in the laboratory preparation of ammonia?

A

6NH3+P2O5+3H2O→(NH4)3PO4

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21
Q

Why is CaCl2[fused] not used as a drying agent in the laboratory preparation of ammonia?

A

8NH3+CaCl2→CaCl2.8NH3

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22
Q

Laboratory preparation of Ammonia from metal nitrides

A

Mg3N2+6H2O→3Mg(OH)2+2NH3

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23
Q

Manufacture ammonia by Haber’s process

A

N2+3H2 ⇌ 2NH3 + 22.4 kcal

24
Q

Burning of ammonia In Oxygen

A

4NH3+3O2→2N2+6H2O

25
Q

catalytic oxidation of ammonia

A

4NH3+5O2→4NO+6H2O
[Pt,800”]

26
Q

Liquor ammonia

A

NH3+H2O→ NH4OH⇌NH4+ +
OH-

27
Q

preparation of ammonium salts from nitric acid

A

from NH3 gas or aq. Ammonia
NH3+HNO3→NH4NO3
NH4OH+HNO3→NH4NO3+H2O

28
Q

Ammonia gas as a reducing agent

A

2NH3+3CuO→3Cu+3H2O+N2[g]

29
Q

A reaction of ammonia and chlorine with chlorine in excess

A

NH3+3Cl2[excess]→3HCl+NCl3[l]

30
Q

Reaction of ammonia and chlorine with ammonia in excess

A

8NH3[excess] + 3Cl2 → 6NH4Cl + N2

31
Q

Preparation of HCl gas by direct combination

A

H2+Cl2→2HCl[g]
{diffused sunlight}

32
Q

laboratory preparation of HCl gas

A

<200’
NaCl+H2SO4→Na2SO4+2HCl[g]

33
Q

Why is CaO[fused] not used as a drying agent in preparation of HCl gas

A

CaO+HCl→CaCl2+H2O

34
Q

Why is P2O5 not used as a drying agent in preparation of HCl gas

A

2P2O5+3HCl→POCl3+3HPO3

35
Q

Reaction of HCl acid with silver nitrate/ Lead nitrate

A

AgNO3 + HCl → AgCl[ppt] + HNO3
Pb(NO3)2 + 2HCl → PbCl2[ppt] + 2HNO3

36
Q

Reaction of HCl acid with Sodium thiosulfate

A

Na2S2O3 + 2HCl → 2NaCl + SO2 + S + H2O

37
Q

Reaction of hydrochloric acid with oxidising agents

A

2KMnO4+16HCl→2KCl+2MnCl2+8H2O+5Cl2

38
Q

Laboratory preparation of methane and ethane

A

CH3-COONa + NaOH → CH4 + Na2CO3
CH3-CH2-COONa + NaOH → C2H6 + Na2CO3
[CaO]

39
Q

complete oxidation of methane and ethane

A

CH4 + O2[excess] → CO2 + 2H2O + ^
2C2H6 + 7O2[excess] → 4CO2 + 6H2O + ^

40
Q

Laboratory preparation of ethyne by dehydration of ethyl alcohol

A

C2H5OH→ C2H4 + H2O

41
Q

Laboratory Preparation of ethene by dehydrohalogenation of ethyl bromide

A

C2H4HBr + KOH → C2H4 + KBr + H2O

42
Q

Laboratory preparation of ethyne[acetylene] from calcium carbide

A

CaC2 + 2H2O → C2H2 + Ca(OH)2

43
Q

laboratory preparation of ethyne From Ethylene Dibromide

A

C2H4Br2 + 2KOH → C2H2 + 2KBr + 2H2O

44
Q

Laboratory preparation of ethanol by hydrolysis of alkyl halides

A

C2H5Cl + NaOH[aq] → C2H5OH + NaCl

45
Q

Laboratory preparation of ethanol by hydration of Ethene

A

C2H4 + H2SO4 → C2H5HSO4
C2H5HSO4 + H2O → C2H5OH + H2SO4
———————————————–
C2H4 + H2O → C2H5OH

46
Q

Esterification reaction Of and ethanol and ethanoic acid

A

C2H5OH + CH3COOH → CH3COO-C2H5 + H2O

47
Q

combustion of ethanol

A

C2H5OH + 3O2 → 2CO2 + 3H2O

48
Q

Oxidation Of ethanol by K2Cr2O7[acidified]

A

C2H5OH → [O] CH3CHO → [O] CH3COOH

49
Q

Dehydration of ethanol by conc H2SO4

A

C2H5OH → [conc h2so4] CH2=CH2 + H2O

50
Q

roasting of conc. sulphide ore

A

2ZnS + 3O2 → 2ZnO + 2SO2[g]

51
Q

calcination of conc carbonate ore

A

FeCO3 → FeO + CO2[g]

52
Q

Baeyer’s process - (1)conversion of impure bauxite to sodium aluminate

A

Al2O3.2H2O + 2NaOH → [150-200’] 2NaAlO2 + 3H2O

53
Q

Baeyer’s process - (2)Conversion of sodium aluminate to aluminium hydroxide

A

NaAlO2 + 2H2O → [50’-60’] NaOH + Al(OH)3[ppt]

54
Q

Baeyer’s process - (3)conversion of aluminium hydroxide to pure alumina

A

2Al(OH)3 → [1100’] Al2O3 + 3H2O[g]

55
Q

Thermal dissociation of hydrogen chloride

A

2HCl⇌H2+Cl2
[>500°]

56
Q

Preparation of urea

A

2NH3 + CO2 ➡️ NH2CONH2 + H2O

Chemistry (3 decks)

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