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400 450 500 550 600 650 700 wavelength (nm) : Wavclength of maximum absorbance for base form ph shows that the basic form has a maximum absorption at Amax, while mum absorption at Amax. Explain why the basic form and acidic form ha ions at this specific wavelength. the importance of determining the Amax? ed Ka value for Bromocresol green is 1.6 x 10. Using your measured the percent error. laccepted-measured x 100 accepted calculate the pH of the solutions it is found by using the following equ (mol NaAc log al HAc

400 450 500 550 600 650 700 wavelength (nm) : Wavclength of maximum absorbance for base form ph shows that the basic form has a maximum absorption at Amax, while mum absorption at Amax. Explain why the basic form and acidic form ha ions at this specific wavelength. the importance of determining the Amax? ed Ka value for Bromocresol green is 1.6 x 10. Using your measured the percent error. laccepted-measured x 100 accepted calculate the pH of the solutions it is found by using the following equ (mol NaAc log al HAc

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The measured value is from Graph is 0.915

mol HAC) 2. For the first part of the lab, the following graph was produced. 0.6 Absorbance Curves for BCG basic forn acidic form 0.5 0.4 0.3 0.2 0.1 0.0L 350 600 650 700 400 450 500 550 wavelength (nm) Nmax: Wavelength of maximum absorbance for base form a. The graph shows that the basic form has a maximum absorption at Amax, while the acidic has its minimum absorption at Amax. Explain why the basic form and acidic form have opposite absorptions at this specific wavelength. b. What is the importance of determining the Amax? 3. The accepted Ka value for Bromocresol green is 1.6 x 105. Using your measured value, determine the percent error. % error= Jaccepted-measured x 100 accepted 4. When we calculate the pH of the solutions it is found by using the following equation: (mol NaAc pH =pK, + log mol HAc Bromocresol green is a weak acid, just like acetic acid. But our calculations assume that bromocresol green does not affect the overall acidity (pH) of the acetate solution. Why is this a good assumption? Mixed (absorbance)
Transcribed Image Text:mol HAC) 2. For the first part of the lab, the following graph was produced. 0.6 Absorbance Curves for BCG basic forn acidic form 0.5 0.4 0.3 0.2 0.1 0.0L 350 600 650 700 400 450 500 550 wavelength (nm) Nmax: Wavelength of maximum absorbance for base form a. The graph shows that the basic form has a maximum absorption at Amax, while the acidic has its minimum absorption at Amax. Explain why the basic form and acidic form have opposite absorptions at this specific wavelength. b. What is the importance of determining the Amax? 3. The accepted Ka value for Bromocresol green is 1.6 x 105. Using your measured value, determine the percent error. % error= Jaccepted-measured x 100 accepted 4. When we calculate the pH of the solutions it is found by using the following equation: (mol NaAc pH =pK, + log mol HAc Bromocresol green is a weak acid, just like acetic acid. But our calculations assume that bromocresol green does not affect the overall acidity (pH) of the acetate solution. Why is this a good assumption? Mixed (absorbance)
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