C-09-Q127mediumsingle_mcqThe mathematical expression for pH is—apH=log[H+]\mathrm{pH = \log[H^+]}pH=log[H+]bpH=−log[H+]\mathrm{pH = -\log[H^+]}pH=−log[H+]cpH=log[OH−]\mathrm{pH = \log[OH^-]}pH=log[OH−]dpH=−log[OH−]\mathrm{pH = -\log[OH^-]}pH=−log[OH−]