(a) Use Wade’s rules to rationalize the fact that in [Pd@Bi₁₀]⁴⁺, the Bi atoms are arranged in a pentagonal antiprism. How is this structure related to that of [Pd@Pb₁₂]²⁻?

(b) At 298 K, ammonium perchlorate decomposes according to the equation:

Determine Δ_rG°(298 K) for this decomposition if Δ_fG°(298 K) of N₂O(g), H₂O(l) and NH₄ClO₄(s) are +104, –237 and –89 kJ mol^–1. What part does entropy play in the reaction?

Transcribed Image Text:

4NH4CIO4(s) 2Cl₂(g) + 2N₂O(g) + 30₂(g) + 8H₂O(1)