5gx4zft59q 5gx4zft59q 16-11-2022 Chemistry contestada 4. Calculate the pH of a buffer solution containing 0.300 moldm-3 methanoic acid (HCOOH) and 0.500 moldm-3 sodium methanoate (HCOONa) Ka HCOOH = 1.6 x 10-4 moldm-3