A,B and C are 3 elements which undergo chemical reactions according to
following equations :
a) A2O3 + 2B −−−−−−> B2O3 + 2A
b) 3CSO4 + 2B −−−−−−> B2SO4 + 3C
c) 3CO + 2A −−−−−−> A2O3 + 3C
If an element D is less reactive
write an equation to justify it
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Answer:
) A
2
O
3
+2B→B
2
O
3
+2A
B replaced A
∴B is more reactive that A.
(ii) 3CSO
4
+2B→B
2
(SO
4
)
3
+3C
B replaced C.
B is more reactive than C.
(iii) 3CO+2A→A
2
O
3
+3C
A replaced C.
∴A is more reactive than C.
∴ Order of reactivity.
Most ←B>A>C→C
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