Question 8
Question 8 of 40
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Periodic Table
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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
5. Chemical energetics
5.1. Enthalpy change, \(\Delta H\)

define and use the terms: (a) standard conditions (this syllabus assumes that these are 298 K and 101 kPa) shown by \(^\circ\). (b) enthalpy change with particular reference to: reaction, \(\Delta H_r\), formation, \(\Delta H_f\), combustion, \(\Delta H_c\), neutralisation, \(\Delta H_{neut}\)

11. Group 17
11.4. The reactions of chlorine

describe and interpret, in terms of changes in oxidation number, the reaction of chlorine with cold and with hot aqueous sodium hydroxide and recognise these as disproportionation reactions

7. Equilibria
7.2. Brønsted–Lowry theory of acids...

understand that neutralisation reactions occur when \( H^+( ext{aq}) \) and \( OH^-( ext{aq}) \) form \( H_2O(l) \)