Chemistry A H032: Group 2 and the halogens Topical Past Paper Questions
OCR AS Chemistry A (H032) past-paper questions on Group 2 and the halogens, free. This topic is frequently examined across 5 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
In the UK, water companies typically treat drinking water with chlorine gas at a concentration of $ 0.500 \, \text{mg dm}^{-3} $ or less. Which statement about UK drinking water is correct? A Chlorine in drinking water can catalyse the breakdown of ozone. B Chlorine may form toxi…
This question is about halogens and halogen compounds. (a)* Seawater contains very small quantities of dissolved iodide ions. The concentration of potassium iodide, KI, in seawater is $ 0.150 \, g dm^{-3} $. lodine can be extracted by bubbling chlorine gas through seawater. Expla…
This question is about halogens. (a) Chlorine is used to kill bacteria in drinking water. State one risk in using chlorine in drinking water. [1] (b) Chlorine can be prepared by reacting concentrated hydrochloric acid with manganese(IV) oxide, $ MnO_{2} $. 4HCl(aq) + $ MnO_{2} $(…
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