In an experiment with a suspension of mitochondria in a buffer solution pH 7.2, it is possible to measure the pH of the internal matrix during an intense oxidative phosphorylation process, resulting in 7.9. (a) What is the H + concentration in the mitochondrial matrix at the time of pH measurement? (b) What would be expected in terms of the H + concentration in the intermembrane space relative to the H + concentration in the mitochondrial matrix?