5. Methanoic acid (HCO-H) is the first member of carboxylic acid. (At 298 K dissociation constant Ka of HCO.H in water =

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5 Methanoic Acid Hco H Is The First Member Of Carboxylic Acid At 298 K Dissociation Constant Ka Of Hco H In Water 1 (21.25 KiB) Viewed 76 times

5. Methanoic acid (HCO-H) is the first member of carboxylic acid. (At 298 K dissociation constant Ka of HCO.H in water = 1.78 x 106 mol dm?) i. Draw the structure of methanoic acid, state the functional group(s) in the methanoic acid ii. Calculate the pH of 0.10 M HCO H(aq) at 298 K. 111. Calculate the volume of 0.10 M NaOH(aq) that must be added to 100.0 cm' of 0.10 M HCOH(aq) to obtain a solution of pH 4.0 at 298 K iv. Explain why the solution in (iii) can act as a buffer.