Justify that the following reaction are redox reaction
(a) \(CuO(s)+{ H }_{ 2 }(g)\rightarrow Cu(s)+{ H }_{ 2 }O(g)\)
(b) \({ F }e_{ 2 }O_{ 3 }(s)+3CO(g)\rightarrow 2Fe(s)+3{ CO }_{ 2 }(g)\)
(c) \(4BCl_{ 3 }(g)+3LiAl{ H }_{ 4 }(s)\longrightarrow 2{ B }_{ 2 }{ H }_{ 6 }(g)+3LiCl(s)+3AlC{ l }_{ 3 }(s)\)
(d) \(2k(s)+{ F }_{ 2 }(g)\longrightarrow 2K^{ + }{ F }^{ - }(s)\)
(e) \(4N{ H }_{ 3 }(g)+5{ O }_{ 2 }(g)\longrightarrow 4NO(g)+6H_{ 2 }O(g)\)

Justify that the following reaction are redox reaction
\(4BCl_{ 3 }(g)+3LiAl{ H }_{ 4 }(s)\longrightarrow 2{ B }_{ 2 }{ H }_{ 6 }(g)+3LiCl(s)+3AlC{ l }_{ 3 }(s)\)

Justify that the following reaction are redox reaction
\(2k(s)+{ F }_{ 2 }(g)\longrightarrow 2K^{ + }{ F }^{ - }(s)\)

Justify that the following reaction are redox reaction
\(4N{ H }_{ 3 }(g)+5{ O }_{ 2 }(g)\longrightarrow 4NO(g)+6H_{ 2 }O(g)\)

Using electron transfer concept, identify the oxidant and reductant in the redox reaction.
(a) Zn(s) +2H⁺(aq)\(\rightarrow\) Zn²⁺(aq) +H₂(g)
(b) 2[Fe(CN)₆]^4-(aq)+H₂O₂(aq)+2H⁺(aq)→2[Fe(CN)₆]^-3(aq)+2H₂O(l)
(c) 2[Fe(CN)₆]^3-(aq)+2OH^-(aq)+H₂O₂(aq)→2[Fe(CN)₆]^4-(aq)+O₂(g)+2H₂O(l)
(d) \(Br{ O }_{ 3 }^{ - }(aq)+{ F }_{ 2 }(g)+2O{ H }^{ - }(aq)\rightarrow Br{ O }_{ 4 }^{ - }(aq)+2{ F }^{ - }(aq)+{ H }_{ 2 }O(l)\)
(e) \(2NaCl{ O }_{ 3 }(aq)+{ I }_{ 2 }(aq)\rightarrow 2NaCl{ O }_{ 3 }(aq)+{ cl }_{ 2 }(g)\)

What are the oxidation numbers of the underlined elements and how do you rationalise your results?
(a) KI₃
(b) H₂S₄O₆
(c) Fe₃O₄
(d) CH₃CH₂OH
(e) CH₃COOH

In Ostwald's process for the manufacture of nitric acid, the first step involves the oxidation of ammonia gas by oxygen gas to give nitric oxide gas and steam. What is the maximum weight of nitric oxide that can be obtained starting only with 10.0 g of ammonia and 20.0 g of oxygen?

How do you account for the following observations?
When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas HCl, but if the mixture contains bromide then we get red vapour of bromine. Why?

Justify giving reactions that among halogens, fluorine is the best oxidant and among hydrohalic compounds, hydroiodic acid is the best reductant.