Chemistry
State two chemical properties each with equations of a solution containing
(i) H+ ions
(ii) OH- ions
Answer
(i) Chemical properties of a solution containing H+ (acids) are as follows —
- Neutralization — acids neutralizes base to give salt and water only.
Example : CuO + H2SO4 ⟶ CuSO4 + H2O - 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 —
- Neutralization — Alkalis neutralize acids to form salt and water.
Example :
Ca(OH)2 + 2HCl ⟶ CaCl2 + 2H2O - 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.
Related Questions
Give equations for the decomposition of a metallic (i) chloride (ii) nitrate with conc. H2SO4.
Oxygen atom in water has two 'lone pair of electrons'. Explain the meaning of the term in italics. With the help of an electron dot diagram show the formation of hydronium ion and ammonium ion from a water molecule and an ammonia molecule respectively.
State how you would obtain:
- Sulphuric acid from an acidic oxide
- KOH from a basic oxide.
State in the above reactions a reason for the formation of the respective acids from conc. H2SO4.