From the list below, write down the formulas a) acidic; b) basic; c) non-salt-forming.

From the list below, write down the formulas a) acidic; b) basic; c) non-salt-forming. Formulas of oxides: Na20; P2O5; CO; SO3; CrO; Cu2O; N2O; Mn2O7. which ones react with water? Write down the reaction equations.

1. Acidic: P2O5; SO3; Mn2O7

2. Basic: Na2O; CrO; Cu2O.

3. Non-salt-forming: CO; N2O.

Basic oxides of active metals react with water:

Na2O + H2O = 2NaOH.

Many acidic oxides react with water:

P2O5 + 3H2O = 2H3PO4;

SO3 + H2O = H2SO4;

Mn2O7 + H2O = 2 HMnO4.