If the cytoplasm of a cell is at ph 7, and the mitochondrial matrix is at ph 8, then the concentration of h+ ions if the cytoplasm of a cell is at ph 7, and the mitochondrial matrix is at ph 8, then the concentration of h+ ions in the cytoplasm is 8/7 the concentration in the mitochondrial matrix in the cytoplasm is 7/8 the concentration in the mitochondrial matrix is 10 times higher in the mitochondrial matrix than in the cytoplasm is 10 times higher in the cytoplasm than in the mitochondrial matrix