Interesting Chemistry Videos

S/N Topic Description Video

Chemical Reactions

Acids, Bases & Salts

CuSO4 (aq) + Na2CO3 (aq) ---> CuCO3 (s) + Na2SO4 (aq) 

√ CuSO4 (aq) + Na2CO3 (aq) ---> Cu2CO3(OH)2 (s) + Na2SO4 (aq) + CO2(g)



 Chemical Reactions


Superacids are acids with H0 (Hammett acidity function) lower than -12 (100% H2SO4). The modern definition of a superacid is a medium in which the chemical potential of the proton is higher than pure sulfuric acid.


  • Fluoroantimonic acid, H2FSbF            (-23 < H0 < -21)
  • Magic acid,                 FSO3H·SbF5     (H0 = −19.2)
  • Carborane acid,          H(CHB11Cl11)   (H0 < −18)
  • Fluorosulfuric acid,     HSO3F              (H0 = −15.1)
  • Triflic acid,                  CF3SO3H           (H0 = −14.9)

 Chemical Reactions


Superbases are substances that have an extremely high affinity for hydrogen ions. So basic that they can remove all hydrogen ion from water. 

ortho-diethynylbenzene dianion: the strongest man-made base. So strong that it can even pull hydrogen ions off benzene.


4 Haemoglobin & Myoglobin

There are 280 million haemoglobin molecules in a red blood cell.

'Haem' : porphyrin ring (made from 4 pyrroles) + Fe2+ ion. Note that w'Globin' : protein component

When oxygenated, haem is planar.                                    When deoxygenated, haem is 'domed-shaped' due to ionic interaction of peripheral amino acid residues at the interface. (Amine group of an amino acid residue is protonated while another amino acid residue is carboxylated.) 

Note the significance of myoglobin's hyperbolic curve and haemoglobin's sigmoid curve.