Complete Table 8.1 by placing one tick (✓) in each row to indicate the sign of each type of energy change under standard conditions. [Table 8.1]

1. (a)Complete Table 8.1 by placing one tick (✓) in each row to indicate the sign of each type of energy change under standard conditions. [Table 8.1][1]
2. (b)Define enthalpy change of hydration.[1]
3. (c)(i)Table 8.2 shows various energy changes which can be used in the following questions. [Table 8.2] Select and use relevant data from Table 8.2 to calculate the lattice energy, ΔH°latt, of CaBr2(s). It may be helpful to draw a labelled energy cycle. Show your working.[3]
4. (c)(ii)Select and use relevant data from Table 8.2 and your answer to (c)(i) to calculate the standard enthalpy change of hydration, ΔH°hyd, of Br¯. It may be helpful to draw a labelled energy cycle. If you were not able to answer (c)(i), use –2500kJmol˙¹ as your value for ΔH°latt of CaBr2(s). This is not the correct value. Show your working.[2]
5. (c)(iii)The enthalpy change of hydration of the Br¯ ion is more negative than the enthalpy change of hydration of the I¯ ion. Explain why.[2]