🔴 Metallurgy - chemical reactions .1.1
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- Sodium metal exposed to air
4Na(s) + O2 ----- > 2Na2O(s)
When sodium metal exposed to air it react with oxygen to form sodium oxide
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- Magnesium ribbon burn in air
2Mg + O2 ------ > 2MgO
Magnesium ribbon burn in air to form white powder of magnesium oxide.
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🔴 Reaction of metal oxide with water.
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- Sodium oxide dropped in water.
Na2O + H2O ----- > 2NaOH
Would you oxide soluble in water to form aqueous alkali sodium hydroxide.
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- Magnesium oxide dropped in water.
MgO + H2O ----- >Mg(OH)2
Magnesium oxide when dropped in water to form an weak alkali, milk of magnesia means magnesium hydroxide.
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🔴 Reaction of metals with water.
- Sodium metal dropped in water.
2Na(s) + 2 H2O(l) -----> 2 NaOH(aq) + H2(g) + Heat
Sodium metal react rapidly and vigorously with water to form aqueous solution of sodium hydroxide in this process hydrogen gas and heat is liberated.
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- Potassium metal react with water
2K(s) + 2 H2O(l) 2 KOH (aq) + H2(g) + Heat
Potasium metal react rapidly and vigorously with water, in this process aqueous solution of potassium hydroxide form, hydrogen gas and heat is liberated.
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- Calcium metal was dropped into water.
2 Ca(s) + 2 H2O(l) -----> 2 Ca(OH)2(aq) + H2(g)
Calcium reacts with water slowly and lessly in this process calcium hydroxide is formed and hydrogen gas is liberated.
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- Water vapours are passed over aluminium metal.
2Al(s) + 3 H2O(g) ---à Al2O3(s) + 3H2(g)
Water vapours are passed over aluminium metal to form Aluminium oxide and hydrogen gas is released.
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- Water vapour passed over iron metal.
3Fe(s) + 4 H2O(g) ---à Fe3O4(s) + 4H2(g)
Water vapour passed over air metal to form iron (II,III) oxide and hydrogen gas is liberated.
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- Water vapor passed over zinc.
Zn(s) +H2O(g) ----- > ZnO(s) +H2(g)
Water vapor passed over zinc to form zinc oxide and hydrogen gas is released.
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🔴 Reaction of metals with acids
Metal react with acid to form metal chloride and hydrogen gas is liberated.
- Magnesium metal react with hydrochloric acid.
Mg(s) + 2HCl(aq) ------ > MgCl2(aq) + H2(g)
Magnesium metal react with hydrochloric acid to form magnesium chloride and hydrogen gas is liberated.
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- Aluminium metal react with hydrochloric acid.
2Al(s) + 6HCl(aq) ------ > 2AlCl3(aq) + 3H2(g)
Aluminium metal react with hydrochloric acid to form aluminium chloride and hydrogen gas is liberated.
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- Iron react with hydrochloric acid.
- Fe(s) + 2HCl(aq) ----- > FeCl2(aq) + H2(g)
Iron react with hydrochloric acid to form iron chloride and hydrogen gas is liberated.
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- Zinc react with sulphuric acid.
Zn(s) + 2H2SO4aq) ----- > Zn SO4(aq) + H2(g)
Zinc react with sulphuric acid to form zinc sulphate and hydrogen gas is liberated.
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🔴 Reaction of metals with nitric acid.
- Copper react with concentrated nitric acid.
Cu(s) + 4 HNO3(aq) ----- > Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)
Copper reacts with concentrated nitric acid to form copper nitrate and nitrogen dioxide gases liberated.
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- Copper react with dilute nitric acid.
3Cu(s) + 8 HNO3(aq) ---à 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l)
Copper react with dilute nitric acid to form copper nitrate and in this process Nitric oxide liberates.
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