Question

Write the chemical formulac of the following: (a) Aluminium Sulphate (b) Ammonium Chloride (e) Magnesium hydroxide (d) Calcium Sulphate (e) Sodium nitrate (f) Calcium carbonate 27)​

Answer 1

Answer:

(a) Aluminium Sulphate: Al2(SO4)3

(b) Ammonium Chloride: NH4Cl

(c) Magnesium hydroxide: Mg(OH)2

(d) Calcium Sulphate: CaSO4

(e) Sodium nitrate: NaNO3

(f) Calcium carbonate: CaCO3

Explanation:

(a) Aluminium Sulphate: Al2(SO4)3

Aluminium: Al

Valency of Aluminium: 2

Sulphate: (SO4)

Hence, Al2(SO4)3

(b) Ammonium Chloride: NH4Cl

Ammonium: NH4

Chloride: Cl

Valency of Ammonium: 1

Hence, NH4Cl

(c) Magnesium hydroxide: Mg(OH)2

Magnesium: Mg

hydroxide: (OH)2

Valency of Magnesium: 1

Hence, Mg(OH)2

(d) Calcium Sulphate: CaSO4

Calcium: Ca

Sulphate: SO4

Valency of Calcium: 1

Hence, CaSO4

(e) Sodium nitrate: NaNO3

Sodium: Na

nitrate: NO3

Valency of Sodium: 1

Hence, NaNO3

(f) Calcium carbonate: CaCO3

Calcium: Ca

carbonate: CO3

Valency of Calcium: 1

Hence, CaCO3

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