Edexcel A-Level Chemistry AS 4.3 Suggest Ways in Which Risks Can Be Reduced and Reactions Carried Out Safely for Example I Working on a Smaller Scale Ii Questions

Practise choosing practical precautions that reduce chemical risk, using the reagent, hazard label and procedure step given.

Exam points

explain why a step needs ventilation when toxic vapours or gases may be produced
use tables of state and hazard symbols to justify safer handling of one reagent over another

[Maximum number: 2]

This question is about ethene, $\mathrm{C}_{2} \mathrm{H}_{4}$ .

Ethene and chlorine react to form 1,2-dichloroethane.

One hazard symbol for 1,2-dichloroethane is shown.

Figure for Question Edexcel A-Level Chemistry AS 4.3 Suggest Ways in Which Risks Can Be Reduced and Reactions Carried Out Safely for Example I Working on a Smaller Scale Ii Questions question 1 — Edexcel A-Level Chemistry AS

By identifying this hazard, give one way of minimising the risk when working with 1,2-dichloroethane in a laboratory.

Assume the use of safety goggles and a laboratory coat.

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Edexcel A-Level Chemistry AS 4.3 Suggest Ways in Which Risks Can Be Reduced and Reactions Carried Out Safely for Example I Working on a Smaller Scale Ii Questions question 1