Question

Classify the following into acidic and basic oxides: SO2, Na2, CO2, ​MgO, Fe2O3, P2O5

Answer 1

so2 - acidic (forms h2so4 on adding water converting it into acid)
similarly,
na2 - basic
co2 - acidic
mg2- basic
fe2o3- acidic
p2o6- basic
(not confirm about the last 2)

Answer 2

The acidic oxides are: $SO_{2}, CO_{2}, P_{2}0_{5}, Fe_{2}0_{3}$ and the basic oxides are: $Na_{2}O, MgO$.

EXPLANATION:

• Acidic oxide compounds “react with water to form an ACIDS” and “Basic oxides react with water to form an ALKALIS substance”.
• Acidic oxides are also called as ACID ANHYDRIDES, the basic oxides are known as BASE ANHYDRIDES.  
• The Acidic oxides always react with non-metal, the basic oxides react with metal. The basic oxides increase the PH level when added to water. Simply, the acidic will decrease PH level when added to water.