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Two experiments were done. One, using an mL of an unknown solution + nmL iron (III) solution + aspirin. The other, , mL iron (III), and acetylsalicylic acid. Explain why the solutions have a purple color after the iron reagent is added. Yes, the answer is because it is absorbing the other colors, but what is absorbing the other colors?
These tubes were put through the spectrophotometer after all substances had been added. Explain why the spectrophotometer is 'blanked' with JUST the iron reagent. Why couldn't deionized water be used?
Two experiments were done. One, using an mL of an unknown solution + nmL iron (III) solution + aspirin. The other, , mL iron (III), and acetylsalicylic acid. Explain why the solutions have a purple color after the iron reagent is added. Yes, the answer is because it is absorbing the other colors, but what is absorbing the other colors?
These tubes were put through the spectrophotometer after all substances had been added. Explain why the spectrophotometer is 'blanked' with JUST the iron reagent. Why couldn't deionized water be used?
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