Chemistry
Sulphuric Acid — Manufacture-Contact process
| Sulphuric Acid | Complete and balance the equations |
|---|---|
| Manufacture-Contact process | |
| 1. Step 1 [sulphur or pyrite burner] | S + O2 ⟶ …………… ; FeS2 + O2 ⟶ …………… + …………… |
| 2. Step 2 [contact chamber] | SO2 + O2 ⟶ …………… |
| 3. Step 3 [absorbtion tower] | SO3 + H2SO4 ⟶ …………… ; …………… + H2O ⟶ 2H2SO4 |
Sulphuric Acid
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Answer
| Sulphuric Acid | Complete and balance the equations |
|---|---|
| Manufacture-Contact process | |
| 1. Step 1 [sulphur or pyrite burner] | S + O2 ⟶ SO2 ; 4FeS2 + 11O2 ⟶ 2Fe2O3 + 8SO2 |
| 2. Step 2 [contact chamber] | 2SO2 + O2 ⟶ 2SO3 |
| 3. Step 3 [absorbtion tower] | SO3 + H2SO4 ⟶ H2S2O7 ; H2S2O7 + H2O ⟶ 2H2SO4 |
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Chemical properties of sulphuric acid
Sulphuric Acid Complete and balance the equations As an acid [dilute] 4. Forms hydronium ions in aq. soln. H2SO4 + 2H2O ⟶ …………… + SO42- Reaction with 5. Active metal [zinc] Zn + H2SO4 ⟶ …………… + …………… [g] 6. Base [Sodium oxide] Na2O + H2SO4 ⟶ …………… + …………… 7. Base [Sodium hydroxide] NaOH + H2SO4 ⟶ …………… + …………… 8. Carbonate [Potassium carbonate] K2CO3 + H2SO4 ⟶ …………… + …………… + …………… [g] 9. Sulphite [Sodium sulphite] Na2SO3 + H2SO4 ⟶ …………… + …………… + …………… [g] 10. Bisulphite [Sodium bisulphite] NaHSO3 + H2SO4 ⟶ …………… + …………… + …………… [g] 11. Sulphide [Iron [II] sulphide] FeS + H2SO4 ⟶ …………… + …………… As a dibasic acid 12. Basicity is two H2SO4 ⇌ …………… + SO42- 13. Dissociates in two steps H2SO4 ⇌ …………… + ……………
HSO4- ⇌ …………… + SO42-14. Forms two types of salts
- acid salt
- Normal saltNaOH + H2SO4 ⟶ …………… + ……………
2NaOH + H2SO4 ⟶ …………… + ……………As a non - volatile acid [conc.]
Displaces volatile acid from salt15. Sodium chloride NaCl + H2SO4 ⟶ …………… + …………… 16. Sodium nitrate NaNO3 + H2SO4 ⟶ …………… + …………… As an oxidising agent [conc. acid]
Oxidation of17. Carbon C + H2SO4 ⟶ …………… + H2O + …………… 18. Sulphur S + H2SO4 ⟶ …………… + H2O 19. Phosphorous P + H2SO4 ⟶ …………… + H2O + …………… 20. Copper Cu + H2SO4 ⟶ …………… + H2O + …………… 21. Zinc Zn + H2SO4 ⟶ …………… + H2O + …………… 22. Hydrogen iodide HI + H2SO4 ⟶ …………… + H2O + …………… 23. Hydrogen sulphide H2S + H2SO4 ⟶ …………… + H2O + …………… As a dehydrating agent [conc. acid] 24. Glucose C6H12O6 ⟶ …………… + H2O 25. Sucrose C12H22O11 ⟶ …………… + H2O 26. Cellulose [C6H10O5]n ⟶ …………… + H2O 27. Formic acid H.COOH ⟶ …………… + H2O 28. Oxalic acid H2C2O4 ⟶ …………… + …………… + H2O 29. Hydrated copper sulphate CuSO4.5H2O ⟶ …………… + H2O State the substance/s reacted with dilute or concentrated sulphuric acid to form the following gases:
(i) Hydrogen
(ii) Carbon dioxide.
State whether the acid used in each case is dilute or concentrated.
Write the equations for the lab. preparation of:
(i) Na2SO4 using dil. H2SO4,
(ii) PbSO4 using dil. H2SO4
State the name of the process by which H2SO4 is manufactured. Name the catalyst used.