(a) Na3N remained an elusive compound until
20O2. Calculate a value for ΔfH°(Na3N, s) using data from Appendices 8 and 10, and the following estimated values of ΔH(298 K):
ΔEAH = +2120 kJ mol 1
3Na+ (g) + N3" (g) — Na3N (s)
ΔiatticH° = -4422 Id mol-1
Comment on whether the value obtained is sufficient to indicate whether Na3N is thermodynamically stable.
(b) The high-temperature crystalline form of RbNH2 adopts a structure with a ccp array of [NH2]– ions and Rb ions occupying octahedral sites. To which structure type does this correspond? Sketch a unit cell of RbNH2 and confirm the stoichiometry of the compound by considering the number of ions per unit cell.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.