The following reaction is an example of a: 4NH3(g)+5O2(g)→4NO(g)+6H2O(l) (i) displacement reaction (ii) combination reaction (iii) redox reaction (iv) neutralisation reaction
A
(i) and (iv)
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B
(ii) and (iii)
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C
(i) and (iii)
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D
(iii) and (iv)
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Solution
The correct option is D (i) and (iii) (i) It is a displacement reaction as hydrogen in ammonia (NH3) is being displaced by oxygen to form nitric oxide (NO) and water (H2O).
(iii) It is a redox reaction as both oxidation and reduction processes are taking place.
(a) Oxidation: Ammonia (NH3) combines with oxygen (O2) to form nitric oxide (NO).
(b) Reduction: Oxygen (O2) combines with hydrogen (H2) to form water (H2O).