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Acid + Metal Oxide → Metal Salt + Water

Key Stage 3

Meaning

Acid + Metal Oxide → Metal Salt + Water is the general equation for a neutralisation reaction between a Metal Oxide and an acid.

About 'Acid + Metal Oxide' Reactions

Acid + Metal Oxide reactions are exothermic so the there will be a temperature rise.
The reaction between a Metal Oxide and an acid produces water
The reaction between a Metal Oxide and an acid produces a Metal Salt.

Examples

Acid + Metal OxideMetal Salt + Water

Hydrochloric Acid + Lithium OxideLithium Chloride + Water
Hydrochloric Acid + Iron OxideIron Chloride + Water
Sulphuric Acid + Potassium OxidePotassium Sulphate + Water
Sulphuric Acid + Aluminium OxideAluminium Sulphate + Water
Nitric Acid + Magnesium OxideMagnesium Nitrate + Water
Nitric Acid + Titanium OxideTitanium Nitrate + Water
Citric Acid + Sodium OxideSodium Citrate + Water
Citric Acid + Nickel OxideNickel Citrate + Water
Ethanoic Acid + Calcium OxideCalcium Ethanoate + Water
Ethanoic Acid + Manganese OxideManganese Ethanoate + Water

Key Stage 4

Meaning

Acid + Metal Oxide → Metal Salt + Water is the general equation for a neutralisation reaction between a Metal Oxide and an acid.

About 'Acid + Metal Oxide' Reactions

Acid + Metal Oxide reactions are exothermic so the there will be a temperature rise.
Acid + Metal Oxide reactions occur when the Metal in the Metal Oxide is more reactive than Hydrogen. This means the metal can lose electrons more easily than Hydrogen can.
During an Acid + Metal Oxide reaction the H+ ions gain an electron from the Metal and bond with the Oxygen to produce water.

Examples

Acid + Metal OxideMetal Salt + Water

Hydrochloric Acid + Lithium OxideLithium Chloride + Water

\(2HCl(aq) + Li_2O(s) → 2LiCl(aq) + H_2O(l)\)

Hydrochloric Acid + Iron (III) OxideIron (III) Chloride + Water

\(6HCl(aq) + Fe_2O_3(s) → 2FeCl_3(aq) + 3H_2O(l)\)

Sulphuric Acid + Potassium OxidePotassium Sulphate + Water

\(H_2SO_4(aq) + K_2O(s) → K_2SO_4(aq) + H_2O(l)\)

Sulphuric Acid + Aluminium OxideAluminium Sulphate + Water

\(3H_2SO_4(aq) + 2Al_2O_3(s) → Al_2(SO_4)_3(aq) + 6H_2O(l)\)

Nitric Acid + Magnesium OxideMagnesium Nitrate + Water

\(2HNO_3(aq) + MgO(s) → Mg(NO_3)_2(aq) + H_2O(l)\)

Nitric Acid + Titanium (III) OxideTitanium (III) Nitrate + Water

\(6HNO_3(aq) + Ti_2O_3(s) → 2Ti(NO_3)_3(aq) + 3H_2O(l)\)

Ethanoic Acid + Sodium OxideSodium Ethanoate + Water

\(2CH_3COOH(aq) + Na_2O(s) → 2CH_3COONa(aq) + H_2O(l)\)

Ethanoic Acid + Calcium OxideCalcium Ethanoate + Water

\(2CH_3COOH(aq) + CaO(s) → (CH_3COO)_2Ca(aq) + H_2O(l)\)