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Part A Calculate the pH in 0.25M HCO2H (Ka=1.8×10?4). Express your answer using two decimal places. pH = 2.18 Part B Calculate the concentrations of all species present (HCO2H, HCO?2, H3O+, and OH?) in 0.25M HCO2H . Express your answers using two significant figures. Enter your answers numerically separated by commas. [HCO2H], [HCO?2], [H3O+], [OH?] = Part C Also calculate the percent dissociation. Express your answer using two significant figures.

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