Q7 of 26 Page 1

Write the structures of the following molecules.

(i) H2S2O8


(ii) XeF6


Option (i) H2S2O8 has sulphur as the central atom. For 8 oxygen atoms to be adjusted we can consider a di-suphate structure as follows:



Option (ii) XeF6 is a halogen derivative of noble gas with Xe as the central element with +6 charge. The structure is given as follows:



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5

Write the IUPAC name of the given compound


 6

Write two differences between a solution showing positive deviation and a solution showing negative deviation from Raoult’s law.

 8

An organic compound X having molecular formula C4H8O gives orange-red precipitate with 2,4-DNP reagent. It does not reduce Tollens’ reagent but gives yellow precipitate of Iodoform on heating with NaOI. Compound X on reduction with LiAlH4 gives compound ‘Y’ which undergoes dehydration reaction on heating with conc. H2SO4 to form But-2-ene Identify the compounds X and Y.

 9

When a coordination compound is mixed with AgNO3, 4 moles (question corrected) of AgCl are precipitated per mole of the compound. Write:

(i) Structural formula of the complex


(ii) IUPAC name of the complex