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Question

Identify the correct order of acidic strength of CO2,CaO,H2O.

A
CaO<H2O<CO2
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B
H2O<CaO<CO2
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C
CaO<H2O<CO2
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D
H2O<CO2<CaO
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Solution

The correct option is A CaO<H2O<CO2
CO2 is acidic oxide, H2O is amphoteric oxide, CaO is strongly basic. Therefore, order of acidic strength is :
CaO<H2O<CO2

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