A disc-shaped piece (1 cm2 area1 mm thick) of the CSZ referred to in Questions 7 and 8, carrying porous electrodes across the two faces, serves as a membrane separating an oxygen atmosphere from an enclosure of volume 10-4 m3. If the membrane is maintained at 100 8C and the enclosure at 300 °C, estimate the rise in oxygen pressure in the enclosure if oxygen is pumped into it for 1 h by a potential difference of 1 V maintained between the disc faces.