Phosphoric acid, H3PO4(aq), is a triprotic acid. Calculate the pH and concentrations of H3O + (aq),...

Phosphoric acid, H3PO4(aq), is a triprotic acid. Calculate the pH and concentrations of H3O + (aq), H3PO4(aq), H2PO4 − (aq), HPO4 2− (aq), PO4 3− (aq), and OH− (aq) in a 0.100-M phosphoric acid solution at 25°C.

Expert Solution

all the Ka values I have taken from internet you can check as well.

All the approximations I have taken due to low Ka values of H3PO4. Low Ka values means it dissociates to very small extent.

concentration of H3O+ means concentration of H+ which is equal to 2.62×10^-2 M.

pH value is 1.59

Rest of the values I have written in solution.

queen_honey_blossom answered 1 year ago

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