Pblock Elementsii Result Question 53
53. Write the balanced equations involved in the preparation of
(1979,10 M)
(i) bleaching powder from slaked lime
(ii) nitric oxide from nitric acid
(iii) chlorine from sodium chloride
(iv) anhydrous aluminium chloride from alumina
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Solution:
(i) $\mathrm{Ca}(\mathrm{OH})_2+\mathrm{Cl}_2 \xrightarrow{40^{\circ} \mathrm{C}} \mathrm{CaOCl}_2+\mathrm{H}_2 \mathrm{O}$
(ii) $3 \mathrm{Cu}+8 \mathrm{HNO}_3$ (dil) $\longrightarrow 3 \mathrm{Cu}\left(\mathrm{NO}_3\right)_2+4 \mathrm{H}_2 \mathrm{O}+2 \mathrm{NO}$
(iii) $2 \mathrm{NaCl}+2 \mathrm{H}_2 \mathrm{SO}_4+\mathrm{MnO}_2 \longrightarrow \mathrm{Na}_2 \mathrm{SO}_4+\mathrm{MnSO}_4$ $+2 \mathrm{H}_2 \mathrm{O}+\mathrm{Cl}_2$
(iv) $\mathrm{Al}_2 \mathrm{O}_3+3 \mathrm{C}+3 \mathrm{Cl}_2 \xrightarrow{\Delta} 2 \mathrm{AlCl}_3+3 \mathrm{CO}$
BETA
