C-09-Q041mediumsingle_mcqpH সংজ্ঞা—a−log[H+]\mathrm{-log[H^+]}−log[H+]blog[H+]\mathrm{log[H^+]}log[H+]c−log[OH−]\mathrm{-log[OH^-]}−log[OH−]d[H+]\mathrm{[H^+]}[H+]