12 Group 17
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Candidates should be able to:
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12.1 Physical properties of selected Group 17 elements
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(a) state that the colour intensity of Group 17
elements: Cl2, Br2, I2, increase down the group;
(b) explain how the volatility of Group 17
elements decreases down the group
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12.2 Reactions of selected Group 17 elements
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(a) deduce and explain the relative reactivities of
Group 17 elements as oxidising agents from
Eº values;
(b) explain the order of reactivity of F2, Cl2, Br2, I2
with hydrogen, and compare the relative
thermal stabilities of the hydrides;
(c) explain the reactions of chlorine with cold and
hot aqueous sodium hydroxide.
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12.3 Reactions of selected halide ions
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(a) explain and write equations for reactions of
Group 17 ions with aqueous silver ions
followed by aqueous ammonia;
(b) explain and write equations for reactions of
Group 17 ions with concentrated sulphuric
acid.
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12.4 Industrial applications of halogens and their compounds
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(a) describe the industrial uses of the halogens and
their compounds as antiseptic, bleaching agent
and in black-and-white photography;
(b) explain the use of chlorine in water treatment.
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*Not suggest to copy down all of them, just for reference in doing own notes
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Chemistry semesters, chapters, and groups are the building blocks of a comprehensive education in the field. Each semester delves into specific areas, covering essential concepts. Best Souls Game Chapters break down topics for better understanding, while groups categorize elements based on similar properties.
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