HO-CH_2-CH(OH)-CH_2-SH + CH_3MgBr text{ (Exce | vedclass

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Question

(C) Grignard reagents $(RMgX)$ react with compounds containing active hydrogen atoms (hydrogen atoms attached to electronegative atoms like $O, S, N$)

Vedclass · Accepted Answer

$3$

Vedclass · Answer

(C) Grignard reagents $(RMgX)$ react with compounds containing active hydrogen atoms (hydrogen atoms attached to electronegative atoms like $O, S, N$) to produce alkanes.The reaction is: $R-MgX + R'-H \rightarrow R-H + Mg(R')X$.In the given compound $HO-CH_2-CH(OH)-CH_2-SH$,there are three such active hydrogen atoms (two in $-OH$ groups and one in the $-SH$ group).Thus,$3$ moles of $CH_3MgBr$ will react with $1$ mole of the compound to release $3$ moles of methane $(CH_4)$.Therefore,$x = 3$.

$HO-CH_2-CH(OH)-CH_2-SH + CH_3MgBr \text{ (Excess)} \rightarrow xCH_4$. What is the value of $x$ in the above reaction?

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