Short Answer Type
Long Answer TypeShort Answer TypeFor a compound LiAl(SiO3)2, what is the charge on SiO3 unit? What is the arrangement of oxygen atoms around the silicon atom?
Long Answer TypeWhat are zeolites? What are the applications of zeolites?
where n is the valence of cation? They may be considered as an open structure of silica in which a fraction n/x+y of the tetrahedral sites has been substituted by aluminium and void spaces are occupied by water molecules.Applications of zeolites. Zeolites are used:
(i) for softening of hard water
(ii) as desiccant
(iii) as a shape selective catalyst, e.g. ZSM-5 (zeolite sieve of molecular porosity 5) in converting methyl alcohol into gasoline (petrol),
(iv) as a catalyst in petrochemical industries
(v) as a detergent builder.
Short Answer TypeLong Answer TypeExplain the difference in properties of diamond and graphite on the basis of their structures.
Short Answer TypeExplain why is there a phenomenal decrease is ionisation enthalpy from carbon to silicon.
Switch
. How will they behave with water? Justify
