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CGP EDU Academic Team
Published on: August 14, 2026
Identify the correct order of acidic strengths of CO 2 , CuO, CaO, H 2 O.
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Verified by ExpertsThe correct answer is:
A
As the metallic character decreases, the basic character decreases and acidic character
increases. In other words if electronegativities difference between elements and oxygen decreases the acidic character increases. CaO is most basic, CuO is weakly basic, H 2 O is neutral and CO 2 is acidic.
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