1.1. The following diagram shows an experiment that could be carried out in the laboratory to obtain ethene from decane, C₁₀H₂₂.

i) Complete the following symbol equation for the reaction taking place.

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   C₁₀H₂₂ → .................... + C₂H₄ 

ii) Name the process which has taken place.

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1.2. Ethene is a hydrocarbon.

The following diagram shows apparatus that can be used to investigate the products formed when ethene is burned.

i) State what you would expect to happen to the limewater in test tube B and give the reason for your answer.

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ii) The experiment was repeated with hydrogen being burned instead of ethene.

I. State what would be seen in test tube A. Give a reason for your answer.

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II. State and explain what would be seen in test tube B.

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