CHEM 141 Exam 2 2025 Questions and
Answers
Draw the VSEPR - --CORRECT ANSWER--
Ideal tetrahedral angle - --CORRECT ANSWER--109.5
What forbids dipole? - --CORRECT ANSWER--An inversion point, C with
different axes, mutiple reflection planes with different axes, improper n fold
Chrial Forbidden - --CORRECT ANSWER--If it has a reflection plane, inversion
center, or improper n fold
Mass Spectrometry - --CORRECT ANSWER--a technique that separates particles
according to their mass, lets us know formula and isotope prevalence
Raman Vibrational Spectroscopy - --CORRECT ANSWER--Measures frequency
of bonds, depends on bond strength and mass and the ratio of frequencies is
similar to bond order (N2 over O2 is 2/3, and N2 is a double bond when O2 is a
triple bond)
NMR - --CORRECT ANSWER--speed at which nuclei rotate when surrounded by
electrons, tells bond type and atomic connectivity
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
Answers
Draw the VSEPR - --CORRECT ANSWER--
Ideal tetrahedral angle - --CORRECT ANSWER--109.5
What forbids dipole? - --CORRECT ANSWER--An inversion point, C with
different axes, mutiple reflection planes with different axes, improper n fold
Chrial Forbidden - --CORRECT ANSWER--If it has a reflection plane, inversion
center, or improper n fold
Mass Spectrometry - --CORRECT ANSWER--a technique that separates particles
according to their mass, lets us know formula and isotope prevalence
Raman Vibrational Spectroscopy - --CORRECT ANSWER--Measures frequency
of bonds, depends on bond strength and mass and the ratio of frequencies is
similar to bond order (N2 over O2 is 2/3, and N2 is a double bond when O2 is a
triple bond)
NMR - --CORRECT ANSWER--speed at which nuclei rotate when surrounded by
electrons, tells bond type and atomic connectivity
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
