A buffer is prepared using lactic acid (HLac) and sodium lactate (Nalac). 0.300 dm3 of the 0.500 mol·dm-3 HLac solution is mixed with 0.300 dm3 of the 0.300 mol·dm-3 Nalac solution to prepare the buffer. Ka for lactic acid (HLac) is 1.4 x 104. What will the pH of the above solution be after 5.0 cm3 of 0.200 mol·dm-3 NaOH has been added to only 100.0 cm3 of this buffer?
A buffer is prepared using lactic acid (HLac) and sodium lactate (Nalac). 0.300 dm3 of the 0.500 mol·dm-3 HLac solution is mixed with 0.300 dm3 of the 0.300 mol·dm-3 Nalac solution to prepare the buffer. Ka for lactic acid (HLac) is 1.4 x 104. What will the pH of the above solution be after 5.0 cm3 of 0.200 mol·dm-3 NaOH has been added to only 100.0 cm3 of this buffer?
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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Transcribed Image Text:A buffer is prepared using lactic acid (HLac) and sodium lactate (Nalac). 0.300 dm3 of the
0.500 mol·dm-3 HLac solution is mixed with 0.300 dm3 of the 0.300 mol·dm-3 Nalac solution
to prepare the buffer. Ka for lactic acid (HLac) is 1.4 x 104.
What will the pH of the above solution be after 5.0 cm3 of 0.200 mol·dm-3 NaOH has
been added to only 100.0 cm3 of this buffer?
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