Figure 7 shows the displayed formulae for the reaction of bromine Figure 7
H
H
H-C
H-- Br
H +
Br
Br
H-C-Br +
H
H
Table 5
shows the bond energies and the overall energy change in the reaction.
Table 5
C-H
Br — Br
C-Br
H-Br
Overall energy
change
Energy in
kJ/mol
412
193
х
366
- 51
Calculate the bond energy X for the C-Br bond.
Use Figure 7 and Table 5
(4 marks]

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.