Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Which of the following statements
regarding complexometric titrations
is incorrect
O The lower the formation constant
for the EDTA-metal complex, the
sharper the endpoint
O The higher the ammonia
concentration, the sharper the end
point for the
EDTA-Ca2* complex.
EDTA contains two basic nitrogens
O In the pH range 3-10 the
predominant species are H2Y²¯ and
HY3-
O a4 value is proportional to the pH
value
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Transcribed Image Text:Which of the following statements regarding complexometric titrations is incorrect O The lower the formation constant for the EDTA-metal complex, the sharper the endpoint O The higher the ammonia concentration, the sharper the end point for the EDTA-Ca2* complex. EDTA contains two basic nitrogens O In the pH range 3-10 the predominant species are H2Y²¯ and HY3- O a4 value is proportional to the pH value
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