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  • Need clarity, kindly explain! - Electrochemistry - BITSAT

Conversion of PbSO_4 \:to\:PBS\: is

  • Option 1)

    Reduction of S

  • Option 2)

    Oxidation of S

  • Option 3)

    Dissociation

  • Option 4)

    None of these

 

Answers (1)

best_answer

As we learnt in 

Reduction -

Removal of Oxygen / electronegative element from a substance of addition of hydrogen / electropositive element to substance.

- wherein

e.g.2HgO\overset{\bigtriangleup }{\rightarrow}2Hg(l) + O_{2}(g)

 

 Lets see the oxidation states of the constituents. \overset{+2}{Pb}\overset{+6}{S}\overset{-2}{O_{4}}  \rightarrow \overset{+2}{Pb}\overset{-2}{S}.   Clearly , the oxidation states of S changes from +6 to -2, in other words it undergoes reduction.

\therefore Solution is 1


Option 1)

Reduction of S

Correct

Option 2)

Oxidation of S

Incorrect

Option 3)

Dissociation

Incorrect

Option 4)

None of these

Incorrect

Posted by

prateek

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