CHEM0010 WEEK4 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
vibrational modes
vibration patterns in complex molecules
Frequency of vibration depends on
mass of two atoms and bond strength
bond vibration correspond to which section of electromagnetic spectrum?
Infrared (IR)
2 formulas for finding number of possible vibration modes
3N-6 where N is greater than 2
3N-5 where N is describing a group of linear molecules
fingerprint region
In an IR spectrum, the region of 1400 to 400 cm-1 where more complex vibration
patterns, caused by the motion of the molecule as a whole
Equation to calculate vibration frequency
where k is force strength (N)
μ (mu) is reduced mass (kg)
reduced mass formula
make sure + symbol in right place; A formula to remove translations and rotations
mu needs to be kg, so use amu when plugging in numbers and convert to kg after
simplified vibration frequency formula
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
vibrational modes
vibration patterns in complex molecules
Frequency of vibration depends on
mass of two atoms and bond strength
bond vibration correspond to which section of electromagnetic spectrum?
Infrared (IR)
2 formulas for finding number of possible vibration modes
3N-6 where N is greater than 2
3N-5 where N is describing a group of linear molecules
fingerprint region
In an IR spectrum, the region of 1400 to 400 cm-1 where more complex vibration
patterns, caused by the motion of the molecule as a whole
Equation to calculate vibration frequency
where k is force strength (N)
μ (mu) is reduced mass (kg)
reduced mass formula
make sure + symbol in right place; A formula to remove translations and rotations
mu needs to be kg, so use amu when plugging in numbers and convert to kg after
simplified vibration frequency formula
