The ph of mitochondria matrix is 8.2 while the ph of intermembrane is 7.2. what is the voltage potential across the mitochondrial membrane which would prevent hydrogen ions from flowing into the matrix? the concentration of calcium in the motochondria intermembrane space is 0.0002 mM if calcium is actively transparented into the matrix, what would the equlibrium concentration of calcium be at 140 mV in the matrix? would hydrogen ions still flow into the matrix?