Quantitative Analysis of Transition Metal Salts by UV/Vis Spectroscopy
9 | P a g e
Prepared by A. Gorbenko, Edited by M. Danza © 2019
Kingsborough Community College
Post-Lab Questions:
1. How would the determined concentration of your unknown sample be affected (increased, decreased, or stayed the same) if during the transfer of the metal salt into the 50 mL volumetric flask you accidently spilled some of it? Explain.
2. Would the determined concentration of your unknown sample increase, decrease, or stay the same if during the preparation of the Standard Stock Solution you accidently added more water than required to the 50 mL volumetric flask? Explain. Quantitative Analysis of Transition Metal Salts by UV/Vis Spectroscopy
10 | P a g e Prepared by A. Gorbenko, Edited by M. Danza © 2019
Kingsborough Community College
3. Would the determined concentration of your unknown sample increase, decrease, or stay the same if instead of the hydrated salt you accidently used anhydrous salt to prepare your Standard Stock Solution? Explain.
4. How would the determined concentration of your unknown be affected (increased, decreased, or stayed the same) if you accidently read your blank solution with the opaque side facing the source? Explain
9 | P a g e
Prepared by A. Gorbenko, Edited by M. Danza © 2019
Kingsborough Community College
Post-Lab Questions:
1. How would the determined concentration of your unknown sample be affected (increased, decreased, or stayed the same) if during the transfer of the metal salt into the 50 mL volumetric flask you accidently spilled some of it? Explain.
2. Would the determined concentration of your unknown sample increase, decrease, or stay the same if during the preparation of the Standard Stock Solution you accidently added more water than required to the 50 mL volumetric flask? Explain. Quantitative Analysis of Transition Metal Salts by UV/Vis Spectroscopy
10 | P a g e Prepared by A. Gorbenko, Edited by M. Danza © 2019
Kingsborough Community College
3. Would the determined concentration of your unknown sample increase, decrease, or stay the same if instead of the hydrated salt you accidently used anhydrous salt to prepare your Standard Stock Solution? Explain.
4. How would the determined concentration of your unknown be affected (increased, decreased, or stayed the same) if you accidently read your blank solution with the opaque side facing the source? Explain
