Question
Chemistry Question on p -Block Elements
Identify the correct order of acidic strength of CO2,CuO,CaO,H2O
A
CaO<CuO<H20<CO2
B
H2O<CuO<CaO<CO2
C
CaO<H2O<CuO<CO2
D
H2O<CO2<CaO<CuO
Answer
CaO<CuO<H20<CO2
Explanation
Solution
CO2 is acidic oxide, H2O is neutral, CaO is strongly basic and CuO is weakly basic. Therefore, order of acid strength is : CaO<CuO<H2O<CO2