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This is the third episode of the series on Acids, Bases and Salts. In this episode, we discuss the properties of acids and bases.
Properties of Acids
Physical Properties:
Sour in taste.
Highly corrosive.
Chemical Properties:Acid (Dil.) + Active Metals*
2HCl (Dil.) + Mg = MgCl2 + H2
2Al + 6HCl = 2AlCl3 + 3H2
Salt + H2 (*Active Metals – MAZFE – Magnesium, Aluminium, Zinc, Iron)
o Metallic (Bi)Carbonates + Acid (Dil.) Metallic Salt + CO2 + H2O
* Na2CO3 + HCl (Dil.) NaCl + H2O + CO2
* NaHCO3 + HCl (Dil.) NaCl + H2O + CO2
o Metallic (Bi)Sulphites + Acid (Dil.) Metallic Salt + SO2 + H2O
* Na2SO3 + HCl (Dil.) NaCl + H2O + SO2
* NaHSO3 + HCl (Dil.) NaCl + H2O + SO2
o Metallic Sulphides + Acid (Dil.) Metallic Salt + H2S (Rotten Egg Smell) o FeS + HCl FeCl2 + H2S (Rotten Egg Smell)
Properties of Bases
Neutralization: Acid + Base = Salt + Water
HCl+NaOH = NaCl+H2Oo Ammonium Salts + Alkali = Salt + Ammonia + Water
NH4Cl + NaOH = NaCl + NH3 + H2O
Reaction of alkalis with metal salt solutions:
* CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4
Pale blue ppt
* ZnSO4 +2NaOH = Zn(OH)2 + Na2SO4
Gelatinous white ppt
* Zn(OH)2 + 2NaOH = Na2ZnO2 + 2H2O
* Pb(NO3)2 + 2NaOH = Pb(OH)2 + 2NaNO3
Chalky white ppt
* Pb(OH)2 + 2NaOH = Na2PbO2 + 2H2O
* FeSO4 + 2NaOH = Fe(OH)2 + Na2SO4
Dirty green ppt
* FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
Reddish brown ppt
In this episode, the definition, classification and preparation of bases are discussed. A couple of tips for learning equations and observations during chemical reactions are touched upon too.
In this episode, the definition, classification and methods of preparation of acids are discussed. Please keep a notepad and a pen handy, so that you can make notes as you listen to the podcast.
This podcast explains in detail, the variation in metallic and nonmetallic character and electronegativity in the periodic table.
In this episode, variation of two periodic properties - Ionization energy and Electron affinity, in the periodic table is discussed.
The episode introduces some basics of the modern periodic table and touches upon the variation in atomic size in the periodic table.
The podcast currently has 6 episodes available.