JAMB - Chemistry (1994 - No. 45)
In the diagram above, R is a mixture of?
potassium tetraxochlorate (VII) and concentrated H2SO4
potassium trioxochlorate (V) and concentrated H2SO4
potassium tetratoxomanganate (VII) and concentrated HCI
manganese (IV) oxide and concentrated HCI
Explication
R is concentrated hydrochloric acid and potassium tetraoxomanganate(VII)
(See diagram above)