(a) what happens when
(i) Chlorine gas is passed though a hot concentrated solution of NaOH?
(ii) sulphure dioxide gas is passed through an aqueses solution of Fe (III) salt?
(b) Answer the following :
(i) what is the basicity of `H_(3) PO_(3)` and why?.
(ii) why does fluorine not pay the role of a central atom in interhalogen compounds ?
(iii) Why do noble gases have very low boiling points ?

Answer

(i)`(##RES_INO_CHM_XII_V02_C03_E01_183_A01##)`
(b)(i)`3HgCl_(2)+2PH_(3)toHg_(3)P_(2) + 6HCl`
(Ii)`SO_(3)+H_(2)SO_(4)toH_(2)S_(2)O_(7)`
(iii)`6XeF_(4) + 12H_(2)Oto4Xe+2XeO_(3)+24HF+3O_(2)`