In: Chemistry
(a) Zinc carbonate can be heated to form zinc oxide and carbon diox- ide
ZnCO3 ------------------------> ZnO + CO2
(b) On treatment with hydrofluoric acid, silicon dioxide forms silicon tetrafluoride and water.
6HF + SiO2 ------------------------> H2SIF6 + 2 H2O
(c) Sulfur dioxide reacts with water to form sulfurous acid
SO2 + H2O ----------------------> H2SO3
(d) The substance phos- phorus trihydride, commonly called phosphine, is a toxic gas.
PH3 is called phosphine
(e) Perchloric acid reacts with cadmium to form cadmium(II) perchlorate.
2 HClO4 + Cd ---------------------> Cd(ClO4)2 + H2
(f) Vanadium(III) bromide is a colored solid.
VBr3 is called Vanadium(III) bromide