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stuck on nucleophilic substitution exam question

the question is CH3CHBrCH3 +2NH3 ----> CH3CH(NH2)CH3 +NH4Br
it asks to outline the mechanism but the markscheme displays another structure for the reactant CH3CHBrCH3 and the product so I'm really confused, I drew the reactant from the equation and I'm not sure if mine is correct? in the markscheme why is the ch3 on the 2nd carbon I'm so confused
idk how to draw my working out on here for them echanism
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Original post by usernamenew
the question is CH3CHBrCH3 +2NH3 ----> CH3CH(NH2)CH3 +NH4Br
it asks to outline the mechanism but the markscheme displays another structure for the reactant CH3CHBrCH3 and the product so I'm really confused, I drew the reactant from the equation and I'm not sure if mine is correct? in the markscheme why is the ch3 on the 2nd carbon I'm so confused
idk how to draw my working out on here for them echanism


heres the markscheme
Original post by usernamenew
the question is CH3CHBrCH3 +2NH3 ----> CH3CH(NH2)CH3 +NH4Br
it asks to outline the mechanism but the markscheme displays another structure for the reactant CH3CHBrCH3 and the product so I'm really confused, I drew the reactant from the equation and I'm not sure if mine is correct? in the markscheme why is the ch3 on the 2nd carbon I'm so confused
idk how to draw my working out on here for them echanism


look for the longest linear carbon chain.

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