2. (a) When there are extra chloride ions in solution, [CoCl4]2– complex ions can form, which are a different color than the Co2+ ions. Suppose 20% of the Co2+ ions form the complex ions when a student uses aqueous NaCl solution instead of deionized water (he/she picked up the wrong bottle by mistake). How would the presence of [CoCl4]2– complex ions affect the % transmittance values the student reads from the spectrophotometer? Explain. (b) How are the absorbance values changed?

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Chapter21: Transition Metals And Coordination Chemistry
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2. (a) When there are extra chloride ions in solution, [CoCl4]2– complex ions can form, which are a different color than the Co2+ ions. Suppose 20% of the Co2+ ions form the complex ions when a student uses aqueous NaCl solution instead of deionized water (he/she picked up the wrong bottle by mistake). How would the presence of [CoCl4]2– complex ions affect the % transmittance values the student reads from the spectrophotometer? Explain.


(b) How are the absorbance values changed?

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