Equilibrium constants can be measured for the dissociation of Lewis acid–base complexes such as the dimethyl ether complex of BF₃, (CH₃)₂O→BF₃. The value of K (here K_p) for the reaction is 0.17 at 125°C.

(a) Describe each product as a Lewis acid or a Lewis base.
(b) If you place 1.00 g of the complex in a 565-mL flask at 125°C, what is the total pressure in the flask when equilibrium is established? What are the equilibrium partial pressures of the Lewis acid, the Lewis base, and the complex?

Transcribed Image Text:

(CH3)20→BF3(g) BF3(g) + (CH3)₂O(g)