Write balanced chemical equations for the following reactions:
a. Glucose is heated with conc $H_{2} S O_{4}$ .
b.Ozone reacts with lead sulphide.
c. ${S O}_{2}$ is passed through acidified $K {M n O}_{4}$ solution.
d. ${S O}_{2}$ gas is passed through an aqueous solution of a Fe(l11) salt.
e. Iodide ions can be oxidized by ozone in acidic medium.

Open in App

Solution

(a) When concentrated $H_{2} S O_{4}$ is added to glucose, dehydration of sugar takes place with formation of carbon,
${C_{12} H_{22} O_{11}}_{(s)} + {H_{2} S O_{4}}_{(a q)} + {1 / 2 O_{2}}_{(g)} ⟶ 11 C_{(s)} + {C O_{2}}_{(g)} + {12 H_{2} O}_{(g)} + {S O_{2}}_{(g)}$
(b) Ozone reacts with lead sulphide to produce lead sulphate & oxygen.
$P b S + 4 O_{3} ⟶ P b S O_{4} + 4 O_{2}$
(c) $S O_{2}$ , being a strong reducing agent, it decolorizes $K M n O_{4}$ .
$5 S O_{2} + 2 K M n O_{4} + 2 H_{2} O ⟶ 2 H_{2} S O_{4} + 2 M n S O_{4} + K_{2} S O_{4}$
(d) $S O_{2}$ acts as a reducing agent when passed through aqueous solution of $F e (I I I)$ salt & forms $F e (I I)$ salt.
$2 F e^{3 +} + S O_{2} + 2 H_{2} O ⟶ 2 F e^{2 +} + S O_{4}^{2 -} + 4 H^{+}$
(e) Iodine is liberated by oxidation of iodide ions with $O_{3}$
$2 K I + O_{3} + H_{2} O ⟶ I_{2} + O_{2} + 2 K O H$

Suggest Corrections

Similar questions

S O_{2}

{K M n o}_{4}

{S O}_{2}

S O_{2}

F e^{+ 3}

X e F_{4}

S b F_{5}

Join BYJU'S Learning Program