Waec 2021 Chemistry Question 2

Practice essay / theory question 2 from the 2021 Waec Chemistry examination. This question covers General .

Waec 2021 Chemistry Essay / Theory

Topic: General

Question 2 WAEC • 2021 • CHEMISTRY • essay

( a )

(i) State two characteristics of a homologous series.

( a )

(ii) Explain briefly why there are differences in the reaction of ethane and ethene.

( b )

(i) When crystals of sodium chloride were warmed with concentrated tetraoxosulphate (VI) acid, a gas was evolved. Name the gas.

( b )

(ii) State two physical properties of the gas.

( b )

(iii) Write a balanced chemical equation for the reaction.

( c )

(i) What are hydrocarbons?

( c )

(ii) State two natural sources of hydrocarbons.

( c )

(iii) A hydrocarbon contains \( 83 \% \) of carbon by mass. Calculate its empirical formula. \( [H=1.0, C=12.0] \)

( d )

Draw and label a diagram of a set-up that could be used to electroplate a copper ornament with silver.

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

About This Question

This is Waec 2021 Chemistry Question 2. It is one of the essay questions from the 2021 Waec Chemistry examination.

The question covers General .

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows