will someone please help me out with the questions concerning this spectra shown
ID: 934914 • Letter: W
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will someone please help me out with the questions concerning this spectra shown below? I'm having such a struggle trying to answer these. Here is the procedure that led up to the final spectra, since this info will be helpful in answering the questions:
50 mL of deionized water, 5 mL of NA2CO3 stock solution and 10-15 drops of bromothymol blue indicator were mixed together in a beaker. The initial absorbance was recorded on the spectra. Following this, 1-2 drops of HCl was added to the beaker and the absorbance was measured again. The previous step was done repeatedly, as you can see by the number of measurements on the spectra, until we had added 4-6 drops of HCl beyond the endpoint. Again, if I can have any help on the questions below using the spectra and the other info provided, I would be so grateful! I'm just not good at chemistry and don't really know what any of this means :(
1, Describe the changes that occur in the Absorbance vs. Wavelength spectra as the pH changes. What do the spectra imply about the number of distinct chemical forms of the indicator during a titration? How are the different chemical forms of the indicator related to each other?
will someone please help me out with the questions concerning this spectra shown below? I'm having such a struggle trying to answer these. Here is the procedure that led up to the final spectra, since this info will be helpful in answering the questions: 50 mL of deionized water, 5 mL of NA2CO3 stock solution and 10-15 drops of bromothymol blue indicator were mixed together in a beaker. The initial absorbance was recorded on the spectra. Following this, 1-2 drops of HCl was added to the beaker and the absorbance was measured again. The previous step was done repeatedly, as you can see by the number of measurements on the spectra, until we had added 4-6 drops of HCl beyond the endpoint. Again, if I can have any help on the questions below using the spectra and the other info provided, I would be so grateful! I'm just not good at chemistry and don't really know what any of this means :( 1, Describe the changes that occur in the Absorbance vs. Wavelength spectra as the pH changes. What do the spectra imply about the number of distinct chemical forms of the indicator during a titration? How are the different chemical forms of the indicator related to each other?Explanation / Answer
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