| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.hl.TZ1.16 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Derive | Question number | 16 | Adapted from | N/A |
Question
What is the enthalpy of solution of MgF2(s) in kJ mol−1?
Lattice enthalpy of MgF2(s) = 2926 kJ mol−1
Hydration enthalpy of Mg2+(g) = −1963 kJ mol−1
Hydration enthalpy of F−(g) = −504 kJ mol−1
A. 2926 − 1963 + 2(−504)
B. 2926 − 1963 − 504
C. −2926 − (−1963) − (−504)
D. −2926 − (−1963) − 2(−504)
Markscheme
A
Examiners report
[N/A]
