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Chemical Formulae

14. Which is ...

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14. Which is more stable in Sn +2 or Sn +4 ? Explain how to identify which is more stable .

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Q. Assertion :STATEMENT 1 (Assertion)-

S n C l_{2}

is reducing in nature. Reason: STATEMENT 2 (Reason)-

S n^{2 +}

is more stable than

S n^{4 +}

Read the above assertion and reason and choose the correct option regarding it.

F e C l_{3}

can be reduced to

F e C l_{2}

S n C l_{2}

as well as by the addition of

S n

into it. Reason: This reaction is possible since

S n^{4 +}

is more stable than

S n^{2 +}

(inert-pair effect)Also,

F e C l_{3}

solution is acidic due to hydrolysis.

S n

added reacts with

H C l

forming nascent hydrogen that can reduce

F e C l_{3}

F e C l_{2}

P b^{4 +}

compounds are stronger oxidising agents than

S n^{4 +}

compounds.
Statement II The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.(J2008,3M)

Q. How we will get to know which compound is more stable

Q. Which is more stable O2NCH2CH2O- or CH3CH2O- and why?

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