Neco Model Questions Vol1 2019 Chemistry Question 2
Practice objective / multiple choice question 2 from the 2019 Neco Model Questions Vol1 Chemistry examination.
A student carries out the following sequence of reactions starting from 5.00 g of cyclohexanol (M = 100.16 g mol^{-1}). First, cyclohexanol is oxidised to cyclohexanone (M = 98.15 g mol^{-1}) with Na_{2}Cr_{2}O_{7}/H_{2}SO_{4}. Second, the cyclohexanone reacts with phenylhydrazine (M = 108.14 g mol^{-1}) to give the corresponding phenylhydrazone. The overall yield for these two steps is 80 %. Third, the phenylhydrazone undergoes a Fischer indole synthesis with excess ethyl acetoacetate under acidic conditions to give a single indole derivative of formula C_{14}H_{12}N_{2}O (M = 224.25 g mol^{-1}) with a yield of 70 %. Calculate the mass of the final indole product obtained.
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About This Question
This is Neco Model Questions Vol1 2019 Chemistry Question 2. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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