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QJEEAdv02Ch59ef: JEE Advanced 2002 Chemistry - Class 11 JEEAdv02Ch59ef Solution: Identify the correct order of acidic strengths of CO 2 , CuO,…
Identify the correct order of acidic strengths of CO2, CuO, CaO, H2O
Multiple Choice Options
- A CaO < CuO < H2O < CO2
- B H2O < CuO < CaO < CO2
- C CaO < H2O < CuO < CO2
- D H2O < CO2 < CaO < CuO
Step-by-Step Verified Solution
Here's the correct answer and explanation:
Option A: CaO < CuO < H2O < CO2 Understanding Acid-Base Trends:- Oxides of Metals:
- Metal oxides are generally basic in nature.
- Basicity increases with increasing metallic character. Calcium (Ca) is a more reactive metal than copper (Cu), making CaO more basic.
- Oxides of Non-Metals:
- Non-metal oxides are generally acidic.
- Acidity increases with increasing electronegativity of the central non-metal atom. Carbon is more electronegative than hydrogen, so CO2 is more acidic than H2O.
- Most Basic: CaO (Calcium Oxide)
- Less Basic: CuO (Copper Oxide)
- Neutral: H2O (Water)
- Most Acidic: CO2 (Carbon Dioxide)