Fill in the blanks : (i) A molecular of alum (K2SO4.Al2(SO4)3.24H2O) contains __ atoms of oxygen (Option) (40/48)
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ya I think its 40 plss mark as brainiest
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Answer: There are 40 atoms of oxygen in alum.
Explanation:
Chemical formula of alum is K₂SO₄.Al₂(SO₄)₃.24H₂O
Alum is a double salt.
It comprises two sulphate salts : potassium sulphate and aluminium sulphate.
It is hydrated by 24 water molecules.
Number of oxygen atoms in K₂SO₄ = 4
Number of oxygen atoms in Al₂(SO₄)₃ = 4 × 3 = 12
Number of oxygen atoms in hydrated water molecule = 24
Total oxygen atoms = 4 + 12 + 24
Total oxygen atoms = 40
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