How many grams of cocl2 6h2o do you weigh out to

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Unformatted text preview: Cl2 • 6H2O do you weigh out to prepare 200 mL of 0.10M cobalt (II) chloride? grams of CoCl2 • 6H2O = 3 points B. How many mmol of Cl-(aq) are in the resulting solution? mmol Cl- = 3 points Page 3/10 Name: ___________________________________page 4/10 Question 3. (18 points) involves using a spectrophotometer to determine the concentration of a transition ion in aqueous solution (symbolized Trans Ion). The graphs below show the ions' absorption spectrum (at a specific but undesignated concentration) and calibration graph at λ = 600nm). Absorption Spectrum Trans Ion 1.2 Absorption 1 0.8 0.6 0.4 0.2 0 400 500 600 700 Wavelength (nm) A. At what concentration (M) of Trans ion was the absorption spectrum obtained? Circle the Molarity of trans ion used to produce the absorption spectrum: 0.15 0.2 0.32 0.5 1.25 3 points B. Your teammates dilutes the sample of Trans ion used to produce the above absorption spectrum. She adds 9.00 mL of deionized water to 3.00 mL of the trans ion sample and generates another absorption spectrum of the diluted sample from λ 400 to λ 700. Indicate if each statement below is correct or not regarding the spectrum for the diluted sample. Statement 1. The absorptio...
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