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Studying the Effect of Buffering on the Resistance of a Solution to pH Change (3)

Studying the Effect of Buffering on the Resistance of a Solution to pH Change (3)

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Unformatted text preview: I I © 2008. 1994 Cengage Learning [WM 20. 4,91% Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) \ x 1. (1) Calculate the anticipated pH for each of the solutions that resulted whenyou added HCl or N aOH to the "water” beaker. Enter the data in the tables below. } volume of HCl solution experimentally experimentally determined H30+ added, ml. anticipated pH determined pH ion concentration, M 0 1?L'{ (.0: “D o " ?' 5 7 . G Ll ‘5 (P f ' 5 5 3.075 £143 “H 4% '5 10 3-59 ass Mame 10 5-H? H.3I LiKQXIo-S 20 32: L142? 5.3}“0-5 50 3‘“ 4'2“ 5.151! -5 volume of NaOH solution experimentally experimentally determined H 30+ added, mL anticipated pH determined pH ion concentration, M U 3 . 7' Ll . D!) l - (p 5 3. ,, 910‘: mam)” 5 3‘35 9.1? USHMWO'”? w 2»: ‘iaga 5 w o—w 10 H ;. “L35 new: 20 14. 112+ a» t.38,no"’0 50 9.4.; MM)“ (2) Calculate the experimentally determined pH and concentration of H30+ ion for each of the same solutions. Enter the data in the same tables. 101 ...
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