A buffer is prepared by adding 150mL of KOH 1.00M to 250mL of H2PO4 1.00M. Calculate the moles of HCl that will have to be added to this system to change the pH of the buffer obtained by 0.18 units. (Ka of H2PO4- = 6.3 x 10-8 )

A buffer is prepared by adding 150mL of KOH 1.00M to 250mL of H2PO4 1.00M. Calculate the moles of HCl that will have to be added to this system to change the pH of the buffer obtained by 0.18 units. (Ka of H2PO4- = 6.3 x 10-8 )

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter15: Complex Ion And Precipitation Equilibria

Section: Chapter Questions

Problem 11QAP: A buffer is prepared by dissolving 0.0250 mol of sodium nitrite, NaNO2, in 250.0 mL of 0.0410 M...

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Question

A buffer is prepared by adding 150mL of KOH 1.00M to 250mL of H₂PO₄ 1.00M. Calculate the moles of HCl that will have to be added to this system to change the pH of the buffer obtained by 0.18 units. (Ka of H₂PO₄^- = 6.3 x 10^-8)

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