Study of Compounds — Sulphuric Acid — Question 12

(i) Reaction of conc. sulphuric acid with glucose:

$\text{C}_{6}\text{H}_{12}\text{O}_{6}\xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{6C} + \text{6H}_2\text{O}$

(ii) Reaction of conc. sulphuric acid with sucrose:

$\text{C}_{12}\text{H}_{22}\text{O}_{11}\xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{12C} \small{\space[sugar\space charcoal]} + \text{11H}_2\text{O}$

(iii) Reaction of conc. sulphuric acid with cellulose:

$[\text{C}_{6}\text{H}_{10}\text{O}_{5}]\text{n}\xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{6[C]}_\text{n} + \text{5[H}_2\text{O}]_\text{n}$

(iv) Reaction of conc. sulphuric acid with formic acid [H.COOH]:

$\text{H.COOH}\xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{CO} + \text{H}_2\text{O}$

(v) Reaction of conc. sulphuric acid with oxalic acid [H₂C₂O₄]:

$\text{H}_{2}\text{C}_{2}\text{O}_{4} \xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{CO} + \text{CO}_{2} + \text{H}_2\text{O}$

(vi) Reaction of conc. sulphuric acid with ethyl alcohol:

$\text{C}_{2}\text{H}_{5}\text{OH}\xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{C}_{2}\text{H}_{4} \small{\space[ethene-ethylene]} + \text{H}_2\text{O}$

(vii) Reaction of conc. sulphuric acid with hydrated copper sulphate:

$\text{CuSO}_4\text{.5H}_2\text{O} \xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{CuSO}_4 \text{ [White Anhydrous]} + 5\text{H}_2\text{O}$