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Chemistry

State two chemical properties each with equations of a solution containing

(i) H+ ions

(ii) OH- ions

Acids Bases Salts

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Answer

(i) Chemical properties of a solution containing H+ (acids) are as follows —

  1. Neutralization — acids neutralizes base to give salt and water only.
    Example : CuO + H2SO4 ⟶ CuSO4 + H2O
  2. Reaction with active metals — Acids react with active metals [e.g., Mg, Al, Zn, Fe] to liberate hydrogen.
    Example : Zn + 2HCl ⟶ ZnCl2 + H2

(ii) Chemical properties of a solution containing OH- (bases/alkalis) are as follows —

  1. Neutralization — Alkalis neutralize acids to form salt and water.
    Example :
    Ca(OH)2 + 2HCl ⟶ CaCl2 + 2H2O
  2. Reaction with metallic salt — Alkalis react with certain matallic salt solutions to precipitate insoluble hydroxide.
    Example :
    FeCl3 + 3NaOH ⟶ 3NaCl + Fe(OH)3 ↓ red brown ppt.

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