The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the following reaction MO(s) CO 2 (g) MCO 3 (s) A 2 85 g sample containing only MgO and CuO is placed in a 3 00 L container The container is filled with CO 2 to a pressure of 740 torr at 20 o C After the rea...

The partial pressure of CO 2 that reacted is 740 390 350 tor ...

The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the

Question:

The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the following reaction:

MO(s) + CO₂(g) → MCO₃(s)

A 2.85- g sample containing only MgO and CuO is placed in a 3.00-L container. The container is filled with CO₂ to a pressure of 740. torr at 20.^oC. After the reaction has gone to completion, the pressure inside the flask is 390. torr at 20.^oC. What is the mass percent of MgO in the mixture? Assume that only the MgO reacts with CO₂.