When does absorption occur in infrared spectroscopy?
A. When the frequency of the infrared radiation is the same as the rotational frequency of the bond
B. When the frequency of the infrared radiation is less than the frequency of the bond
C. When the frequency of the infrared radiation is the same as the vibrational frequency of the bond
D. When the frequency of the infrared radiation is slightly greater than the frequency of the bond
I think it's D, but I'm not sure. Help?
Think on C.
thanks!!
Ah, the wonderful world of infrared spectroscopy! Let me enlighten you with a touch of humor.
You're almost there, my curious friend! The correct answer is indeed C. Absorption occurs in infrared spectroscopy when the frequency of the infrared radiation matches the vibrational frequency of the bond. It's like a wild dance party where the bond starts boogieing to the same beat as the infrared radiation, absorbing that sweet energy and causing a spectroscopic ruckus!
So, remember, when the frequencies of the infrared radiation and the bond's vibrations hit it off and synchronize their grooves, absorption happens in the infrared spectroscopic arena. Keep rocking those chemistry questions!
To determine when absorption occurs in infrared spectroscopy, we need to understand the basic principle behind it. Infrared spectroscopy is a technique that involves the interaction of infrared radiation with chemical bonds in a molecule.
Molecules have characteristic vibrational frequencies associated with their chemical bonds. When a molecule is exposed to infrared radiation, it can absorb energy from the radiation if the frequency of the radiation matches the vibrational frequency of a particular bond in the molecule.
Option C, "When the frequency of the infrared radiation is the same as the vibrational frequency of the bond," is the correct answer. Absorption occurs when the frequency of the infrared radiation matches the vibrational frequency of the bond in the molecule.
Option A, "When the frequency of the infrared radiation is the same as the rotational frequency of the bond," is incorrect. Rotational motion of a bond is associated with microwave radiation, not infrared radiation.
Option B, "When the frequency of the infrared radiation is less than the frequency of the bond," is also incorrect. Infrared radiation typically has lower frequencies than the vibrational frequencies of chemical bonds.
Option D, "When the frequency of the infrared radiation is slightly greater than the frequency of the bond," is incorrect as well. The absorption occurs when the frequencies are the same, not when they are slightly greater or lesser.
Therefore, the correct answer is C, "When the frequency of the infrared radiation is the same as the vibrational frequency of the bond."