Question

Which of the following pairs are correctly matched? Reactants Products I. $Rx+AgOH (aq)$ RH II. $Rx+AgCN_{(alc)}$ RNC III. $Rx+KCN_{(alc)}$ RNC IV. $Rx+Na_{\text{(ether)}}$ R-R

• A. Only I
• B. $I$ and $II$
• C. $II$ and $III$
• D. $II$ and $IV$

Answer 1

Answer: (D)

$II$ and $IV$

Answer 2

(i) $R X+ Ag ^{+} OH ^{-}$ (moist) ${->[{\Delta}]} \underset{\text { alcohol }}{R OH }+ AgX$

(ii) $RX+ Ag ^{+} CN ^{-}{\text{( Alcoholic ) }}{->[{\Delta}]} \underset{\text{alkyl isocyanide}}{R-\overset{+}{N} \equiv \hat{C}^{-}}+AgX$

(iii) $RX + K ^{+} CN ^{-}{\text{( alcoholic )}} {->[{\Delta}]} \underset{\text{alkyl cyanide}}{R- C \equiv N} + KX$

(iv) $2RX+2Na {->[{\text { ether }}]} \underset{\text { higher alkanes }}{R-R}+2NaX$