Lanthanum oxalate decomposes when heated to lanthanum(III) oxide, CO, and CO₂.

(a) If, at equilibrium, the total pressure in a 10.0-L flask is 0.200 atm, what is the value of K_p?
(b) Suppose 0.100 mol of La₂(C₂O₄)₃ was originally placed in the 10.0-L flask. What quantity of La₂(C₂O₄)₃ remains unreacted at equilibrium at 373 K?

Transcribed Image Text:

La₂ (C₂O4)3 (s) — La₂O3(s) + 3 CO(g) + 3 CO₂(g)