O O (a) (i) Fe, HCl (ii) Cl2 , HCl (iii) NaNO2 , HCl, 0°C (iv) H2 O/H+ (b) (i) Fe, HCl (ii) NaNO2 , HCl, 0°C (iii) H2 O/H+ (iv) Cl2 , FeCl3 (c) (i) Cl2 ...
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