Neco 2018 Chemistry Question 5

Practice essay / theory question 5 from the 2018 Neco Chemistry examination. This question covers stoichiometry, organic chemistry .

Neco 2018 Chemistry Essay / Theory

Topics: stoichiometry organic chemistry

Question 5 NECO • 2018 • CHEMISTRY • essay

The diagram shows the structural formula of an organic compound X which contains only carbon, hydrogen and oxygen atoms. The compound reacts with aqueous sodium hydroxide (NaOH) according to the equation: X + NaOH → Y + Z. In the reaction, Y is a sodium salt and Z is an alcohol. Given that 2.00 g of X reacts with 5.00 g of NaOH (excess) and 1.80 g of Y is obtained, answer the following:

( a )

Write the molecular formula of X.

( b )

State the functional group(s) present in X.

( c )

Calculate the theoretical mass of Y that could be obtained from the given amount of X.

( d )

Determine the percent yield of Y.

( e )

Explain, with reference to the functional group(s), why NaOH reacts with X to give Y and Z.

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This is Neco 2018 Chemistry Question 5. It is one of the essay questions from the 2018 Neco Chemistry examination.

The question covers stoichiometry, organic chemistry .

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