Chemistry
A, B and C are three elements which undergo chemical reactions according to the following equations:
A2O3 + 2B ⟶ B2O3 + 2A
3CSO4 + 2B ⟶ B2(SO4)3 + 3C
3CO + 2A ⟶ A2O + 3C
Answer the following questions:
(a) Which element is the most reactive?
(b) Which element is the least reactive?
Analytical Chemistry
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Answer
(a) Most reactive element is B
(b) Least reactive element is C
Explanation:
Above reactions are displacement reaction. In first and second reactions B is displacing A and C from their oxide and sulphate respectively. In third reaction, A displaces C from its oxide. Considering all three reaction, B is more reactive than A and C.
C is less reactive, and is not displacing either A and B in above reactions.
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