In the reaction CaO(s) + CO2(g) → CaCO3(s) ,
A) O2- acts as a Lewis base and CO2 acts as a Lewis acid.
B) O2- acts as a Lewis base and Ca2+ acts as a Lewis acid.
C) CaO is the Lewis acid and CaCO3 is its conjugate base.
D) CO2 is the Lewis acid and CaCO3 is its conjugate base.
E) Ca2+ acts as a Lewis acid and CO32- acts as a Lewis base.
Correct Answer:
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