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6. A chromatographic solvent is used in the column as: a) stationary phase d) adsorbent phase b) mobile phase c) indicator 7. Sample portions of a material of the same size analyzed at the same time and in the same way are called a) Representative b) Replicate c) Laboratory d) Matrix 8. The correct wavelength range for infrared light is:

6. A chromatographic solvent is used in the column as: a) stationary phase d) adsorbent phase b) mobile phase c) indicator 7. Sample portions of a material of the same size analyzed at the same time and in the same way are called a) Representative b) Replicate c) Laboratory d) Matrix 8. The correct wavelength range for infrared light is:

Appl Of Ms Excel In Analytical Chemistry
Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter4: Least-squares And Calibration Methods
Section: Chapter Questions
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6. A chromatographic solvent is used in the column as: a) stationary phase d) adsorbent phase 7. Sample portions of a material of the same size analyzed at the same time and in the same way are called a) Representative b) Replicate c) Laboratory d) Matrix 8. The correct wavelength range for infrared light is: a) 180-380 cm c) 780-2500 nm b) mobile phase c) indicator 9. To prepare a 50 ml portion of 0.002M Na+ solution from a 0.01M what volume we need to take from the concentrated solution? a) 1.0 x 10¹ b) 2.5 x 10 c) 0.95 x 10¹ d) 1.0 x 10² 10. A 50.0 ml aliquot of 0.050 M NaCN is titrated with 0.10 M HCI. The reaction is CN + H₂O == HCN + H₂O K₂ = 6.2 x 10¹0 Calculate the pH after the addition of 26.00 ml HCI. b) 10.95 a) Solid, liquid b) Liquid liquid c) Liquid, gas d) Solid, gas b) 380-780 nm d) 650-4000 cm a) 5.34 c) 9.38 11. The suitable source for Vis/near IR molecular absorption is: a) Globar b) Tungsten lamp c) Xenon lamp d) Halogen lamp 12. In Column chromatography, the stationary phase is made of and the mobile phase is made of a) Solid, liquid b) Liquid, liquid c) Liquid, gas d) Solid, gas 13. In Gas chromatography, the stationary phase is made of and the mobile phase is made of d) 2.88 14. The main components of the optical spectroscopy when configured as: 3)sample 1)source, 2)wavelength selector, 4)detector, 5)readout is for one of the following types: a) absorption b) fluorescence c) emission d) none of these
Transcribed Image Text:6. A chromatographic solvent is used in the column as: a) stationary phase d) adsorbent phase 7. Sample portions of a material of the same size analyzed at the same time and in the same way are called a) Representative b) Replicate c) Laboratory d) Matrix 8. The correct wavelength range for infrared light is: a) 180-380 cm c) 780-2500 nm b) mobile phase c) indicator 9. To prepare a 50 ml portion of 0.002M Na+ solution from a 0.01M what volume we need to take from the concentrated solution? a) 1.0 x 10¹ b) 2.5 x 10 c) 0.95 x 10¹ d) 1.0 x 10² 10. A 50.0 ml aliquot of 0.050 M NaCN is titrated with 0.10 M HCI. The reaction is CN + H₂O == HCN + H₂O K₂ = 6.2 x 10¹0 Calculate the pH after the addition of 26.00 ml HCI. b) 10.95 a) Solid, liquid b) Liquid liquid c) Liquid, gas d) Solid, gas b) 380-780 nm d) 650-4000 cm a) 5.34 c) 9.38 11. The suitable source for Vis/near IR molecular absorption is: a) Globar b) Tungsten lamp c) Xenon lamp d) Halogen lamp 12. In Column chromatography, the stationary phase is made of and the mobile phase is made of a) Solid, liquid b) Liquid, liquid c) Liquid, gas d) Solid, gas 13. In Gas chromatography, the stationary phase is made of and the mobile phase is made of d) 2.88 14. The main components of the optical spectroscopy when configured as: 3)sample 1)source, 2)wavelength selector, 4)detector, 5)readout is for one of the following types: a) absorption b) fluorescence c) emission d) none of these
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