DP Chemistry (last assessment 2024)
Question 19N.2.hl.TZ0.f(iii)
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.2.hl.TZ0.f(iii) |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | State | Question number | f(iii) | Adapted from | N/A |
f(iii).
[Maximum mark: 1]
19N.2.hl.TZ0.f(iii)
Copper forms two chlorides, copper(I) chloride and copper(II) chloride.
Dilute copper(II) chloride solution is light blue, while copper(I) chloride solution is colourless.
When excess ammonia is added to copper(II) chloride solution, the dark blue complex ion, [Cu(NH3)4(H2O)2]2+, forms.
State the molecular geometry of this complex ion, and the bond angles within it.
Molecular geometry:
Bond angles:
[1]
Markscheme
octahedral AND 90° «180° for axial» ✔
NOTE: Accept square-based bi-pyramid.
