Activity 2.13 NCERT Class 10 Science, Acids, Bases and Salts

Activity 2.13 NCERT Class 10 Science, Chapter 2 Acids, Bases, and Salts

Procedure:

Activity 2.13 asks us to write the formula of various salts, their source and group them into their families.

Answer: 
Formula: 

Potassium sulphate: K2SO4; Sodium sulphate: Na2SO4; Calcium sulphate: CaSO4; Magnesium sulphate: MgSO4; Copper sulphate: CuSO4; Sodium chloride: NaCl; Sodium nitrate: NaNO3; Sodium carbonate: Na2CO3; Ammonium chloride: NH4Cl.

Acids and bases which forms these salts: 

When acids and bases mix, they react vigorously and form respective salt.

Acid + Base ———–> Respective salt

Example:

Sodium hydroxide + Nitric acid ———–> Sodium nitrite.

NaOH  + HNO3 ————> NaNO3 + H2O

Acids used:

Sulphuric acid (H2SO4); Hydrochloric acid (HCl), Nitric Acid (HNO3), Carbonic acid (H2CO3).

Bases used:

Sodium Hydroxide (NaOH); Magnesium Hydroxide (Mg(OH)2); Calcium Hydroxide (Ca(OH)2).

Family:

Sodium salts: Sodium sulphate, Sodium chloride, Sodium nitrate, Sodium carbonate.

Similarly, we can group other salts as Potassium salts, magnesium salts, Ammonium Salts, Chloride salts, Sulphate salts, Nitrate salts etc.

Next:  Solubility and PH of a salt solution, Activity 2.14.

See also: PH of soil, Activity 2.12.

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