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AP EAMCET2004ChemistryIonic Equilibrium

The molecular formula of potash alum is

Options

  1. AKAl ₂ ~S ₄ H ₄₈ O ₄₀
  2. BK ₂ Al ₂ ~S ₄ H ₄₈ O ₃₉
  3. CK ₂ Al ₂ ~S ₄ H ₄₈ O ₄₀
  4. DKAl ₂ ~S ₄ H ₄₈ O ₄₀

Correct answer

C. K ₂ Al ₂ ~S ₄ H ₄₈ O ₄₀

Step-by-step solution

The composition of potash alum is or K ₂ SO ₄ Al ₂ ( SO ₄ )₃ 24 H ₂ O K ₂ Al ₂ ~S ₄ H ₄₈ O ₄₀ It is a double salt of potassium sulphate and aluminium sulphate.

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