Reaction of metals with water
Reaction of metals with water
Metals form respective metal hydroxide and hydrogen gas when react with water.
- Metal + Water ⇨ Metal Hydroxide + Hydrogen
Most of the metals do not react with water. However, alkali metals react vigorously with water.
1. Reaction of sodium metal with water: Sodium(Na) metal forms sodium hydroxide(NaOH) and liberates hydrogen(H2) gas along with a lot of heat when reacts with water(H2O).
- Na(s) + H2O(l) ⇨ NaOH(aq) + H2(g)
2. Reaction of potassium metal with water: Potassium(K) metal forms potassium hydroxide(KOH) and liberates hydrogen(H2) gas along with lot of heat when reacts with water(H2O).
- K(s) + H2O(l) ⇨ KOH(aq) + H2(g)
3. Reaction of calcium metal with water: Calcium(Ca) forms calcium hydroxide(CaOH) along with hydrogen(H2) gas and heat when reacts with water(H2O).
- Ca(s) + 2H2O(l) ⇨ Ca(OH)2(aq) + H2(g)
4. Reaction of magnesium metal with water: Magnesium(Mg) metal reacts with water(H2O) slowly and forms magnesium hydroxide(MgOH) and hydrogen(H2) gas.
- Mg(s) + 2H2O(l) ⇨ Mg(OH)2(aq) + H2(g)
5. When steam(H2O) is passed over magnesium(Mg) metal, magnesium oxide(MgO) and hydrogen(H2) gas are formed.
- Mg(s) + H2O(g) ⇨ MgO(s) + H2(g)
6. Reaction of aluminium metal with water: Reaction of aluminium(Al) metal with cold water is too slow to come into notice. But when steam(H2O) is passed over aluminium metal; aluminium oxide(Al2O3) and hydrogen(H2) gas are produced.
- 2Al(s) + 3H2O(g) ⇨ Al2O3(s) + 3H2(g)
7. Reaction of zinc metal with water: Zinc(Zn) metal produces zinc oxide(ZnO) and hydrogen(H2) gas when steam(H2O) is passed over it. Zinc does not react with cold water.
- Zn(s) + H2O(g) ⇨ ZnO(s) + H2(g)
8. Reaction of Iron with water: Reaction of iron(Fe) with cold water is very slow and comes into notice after a long time. Iron forms rust (iron oxide) when reacts with moisture present in the atmosphere.
9. Iron oxide(Fe3O4) and hydrogen(H2) gas are formed by passing of steam(H2O) over iron(Fe) metal.
- 3Fe(s) + 4H2O(g) ⇨ Fe3O4(s) + 4H2(g)
Other metals usually do not react with water or react very slowly.
Metals form respective metal hydroxide and hydrogen gas when react with water.
- Metal + Water ⇨ Metal Hydroxide + Hydrogen
Most of the metals do not react with water. However, alkali metals react vigorously with water.
1. Reaction of sodium metal with water: Sodium(Na) metal forms sodium hydroxide(NaOH) and liberates hydrogen(H2) gas along with a lot of heat when reacts with water(H2O).
- Na(s) + H2O(l) ⇨ NaOH(aq) + H2(g)
2. Reaction of potassium metal with water: Potassium(K) metal forms potassium hydroxide(KOH) and liberates hydrogen(H2) gas along with lot of heat when reacts with water(H2O).
- K(s) + H2O(l) ⇨ KOH(aq) + H2(g)
3. Reaction of calcium metal with water: Calcium(Ca) forms calcium hydroxide(CaOH) along with hydrogen(H2) gas and heat when reacts with water(H2O).
- Ca(s) + 2H2O(l) ⇨ Ca(OH)2(aq) + H2(g)
4. Reaction of magnesium metal with water: Magnesium(Mg) metal reacts with water(H2O) slowly and forms magnesium hydroxide(MgOH) and hydrogen(H2) gas.
- Mg(s) + 2H2O(l) ⇨ Mg(OH)2(aq) + H2(g)
5. When steam(H2O) is passed over magnesium(Mg) metal, magnesium oxide(MgO) and hydrogen(H2) gas are formed.
- Mg(s) + H2O(g) ⇨ MgO(s) + H2(g)
6. Reaction of aluminium metal with water: Reaction of aluminium(Al) metal with cold water is too slow to come into notice. But when steam(H2O) is passed over aluminium metal; aluminium oxide(Al2O3) and hydrogen(H2) gas are produced.
- 2Al(s) + 3H2O(g) ⇨ Al2O3(s) + 3H2(g)
7. Reaction of zinc metal with water: Zinc(Zn) metal produces zinc oxide(ZnO) and hydrogen(H2) gas when steam(H2O) is passed over it. Zinc does not react with cold water.
- Zn(s) + H2O(g) ⇨ ZnO(s) + H2(g)
8. Reaction of Iron with water: Reaction of iron(Fe) with cold water is very slow and comes into notice after a long time. Iron forms rust (iron oxide) when reacts with moisture present in the atmosphere.
9. Iron oxide(Fe3O4) and hydrogen(H2) gas are formed by passing of steam(H2O) over iron(Fe) metal.
- 3Fe(s) + 4H2O(g) ⇨ Fe3O4(s) + 4H2(g)
Other metals usually do not react with water or react very slowly.
