Question

macmilanlearneg Gastric juice is made up of substances secreted from parietal cells, chief cells, and mucous-secreting cells The cells secrete HCl, proteolytic enzyme zymogens, mucin, and intrinsic factor. The pH of gastric juice is acidic, between 1-3. If the pH of gastric juice is 2.4, what is the amount of energy (AG) required for the transport of hydrogen ions from a cell ((nternal pH of 7.4) into the stomach lumen? Assume that the potential difference across the membrane separating the cell and the interior of the stomach is-70.0 mV (inside of cells negative relative to the lumen of the stomach). Assume that the temperature is 37-C. The Faraday constant is 96.5 kJ-V-1, mor 1 and the gas constart is 8.31 4x 10-3 kJ-mor". Express your answer in kJ/mol. Number 22.93 kJ/ mol

Answer 1