Second Exam Key

Second Exam Key - Score - Problem I (I) Circle the correct...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
(I) Circle the correct answer to each of the following questions (5 points each). (1) What compound shows the highest wavelength λ max for absorbance of UV radiation? (2) Which of the following cyclic or polycyclic molecules contains a destabilizing, antiaromatic , cyclic array of electrons in the fully planar form? (3) Which of the following heterocycles is nonaromatic? (4) Which of the following statements about the absorbance (A) measured by a UV-Vis spectrophometer is false? The absorbance of a sample is inversely proportional to the path length of the cell that holds it. The absorbance of a sample is normally plotted on the y- axis of a UV-Vis spectrum. A = log( I r /I s ), where I r and I s are the intensity of the beams that pass through the reference and sample cells, respectively. The absorbance of a sample is directly proportional to the concentration of the compound in the sample cell. The absorbance of a sample is directly proportional to the molar absorbtivity (or extinction coefficient ε ) of the compound in the sample cell. Score - Problem I
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 10

Second Exam Key - Score - Problem I (I) Circle the correct...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online