Thursday, April 29, 2021

Acids, Bases and Salts | Class 10 | Activity 2.13 with Solution

Activity 2.13  
  • Write the chemical formulae of the salts given below.
Potassium sulphate, sodium sulphate, calcium sulphate, magnesium sulphate, copper sulphate, sodium chloride, sodium nitrate, sodium carbonate and ammonium chloride.
  • Identify the acids and bases from which the above salts may be obtained.
✅ Answer:

Salts & their Chemical formulae

Formed from which Acids & bases?

Potassium sulphate (K2SO4)

H2SO& KOH

Sodium sulphate (Na2SO4)

H2SO& NaOH

Calcium sulphate (CaSO4)

H2SO4 & CaCO3

Magnesium sulphate (MgSO4)

H2SO4 & Mg(OH)2

Copper sulphate (CuSO4)

H2SO4 & Cu(OH)2

Sodium chloride (NaCl)

HCl & NaOH

Sodium nitrate (NaNO3)

HNO3 & NaOH

Sodium carbonate (Na2CO3)

H2CO3 & NaOH

Ammonium chloride (NH4Cl)

HCl + NH4OH

  • Salts having the same positive or negative radicals are said to belong to a family. For example, NaCl and Na2SO4 belong to the family of sodium salts. Similarly, NaCl and KCl belong to the family of chloride salts. How many families can you identify among the salts given in this Activity?
✅ Answer: Na2SO4NaCl, NaNO3 and Na2CObelong to the family of sodium salts. K2SO4, Na2SO4, CaSO4, MgSO4, CuSO4 belong to the family of sulphate salts. NaCl and KCl belong to the family of chloride salts.

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