equation - 4 Flashcards
Reaction of conc. HNO3 with Sulphur
S + 6HNO3 → H2SO4 + 2H2O + 6NO2
Reaction of conc. HNO3 with Carbon
C + 4HNO3 → CO2 + 2H2O + 4NO2
Reaction of dil. HNO3 with Copper
3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO2
Reaction of very dil. HNO3 with Magnesium
Mg + 2HNO3 → Mg(NO3)2 + H2
Reaction of conc. HNO3 with Copper
Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2
Test for Nitric Acid
FeSO4 + 3H2SO4 + 2HNO3 → 3Fe(SO4)2 + 4H2O + 2NO
Brown Ring Test
FeSO4 + NO → FeSO4.NO (Brown ring)
Effect of Heat on Potassium Nitrate
2KNO3 → 2KNO2 + O2
Effect of Heat on Sodium Nitrate
2NaNO3 → 2NaNO2 + O2
Effect of Heat on Lead Nitrate
2Pb(NO3)2 → 2PbO + 4NO2 + O2
Effect of Heat on Copper Nitrate
2Cu(NO3)2 → 2CuO + 4NO2 + O2
Effect of Heat on Silver Nitrate
2AgNO3 → 2Ag + 2NO2 + O2
Effect of Heat on Ammonium Nitrate
NH4NO3 → N2O + 2H2O
Manufacture of Sulphuric Acid (Contact Process)
SO2 is produced by burning sulphur or iron pyrites
Oxidation of SO2 in Contact Tower
2SO2 + O2 → 2SO3 (V2O5 catalyst, 450-500°C, 1-2 atm pressure)
Oleum Formation in Absorption Tower
SO3 + H2SO4(98%) → H2S2O7
Dilution of Oleum to Sulphuric Acid
H2S2O7 + H2O → 2H2SO4
Reaction of Dil. H2SO4 with Zinc
Zn + H2SO4 → ZnSO4 + H2
Reaction of Dil. H2SO4 with Sodium Carbonate
Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2
Reaction of Dil. H2SO4 with Sodium Sulphite
Na2SO3 + H2SO4 → Na2SO4 + H2O + SO2
Sulphuric Acid as a Dibasic Acid
H2SO4 → 2H+ + SO4 2-
Formation of Acid Salt
NaOH + H2SO4 → NaHSO4 + H2O
Formation of Normal Salt
2NaOH + H2SO4 → Na2SO4 + 2H2O
Conc. H2SO4 as a Non-Volatile Acid
NaCl + H2SO4 (<200°C) → NaHSO4 + HCl
Conc. H2SO4 with KNO3
KNO3 + H2SO4 (<200°C) → KHSO4 + HNO3
Conc. H2SO4 as an Oxidizing Agent
C + 2H2SO4 → CO2 + 2H2O + 2SO2
Reaction of Sulphur with Conc. H2SO4
S + 2H2SO4 → 3SO2 + 2H2O