If cleaning does not throughly remove the surface water from your plastic sample, where in the energy ranges of the ir spectrum
1 answer:
If cleaning does not thoroughly remove the surface water from your plastic sample, the 3500-3000region of the IR spectrum might you to see a broad peak, indicating the presence of water.
In the range of the IR spectrum between 3500 and 3000, a large peak resulting from the stretching vibration can be seen if water is present in the sample. Only the extremely polar O-H single bond, a type of bond, is present in water. It has a strong presence in the IR spectrum due to its polarity (IR stands for infrared). An extremely strong and wide peak in the range of 3500–3000
appears as a result of its stretching vibration.
A water peak generally overlaps with peaks from N-H, O-H, and C-H bonds, often completely masking them, making it very undesirable for an IR sample to have water. A second peak with water-like properties may be seen at about 1550, which results from the scissoring vibration of the two O-H bonds.
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Answer : cis-2-pentene
Explanation : The stereoisomers are the compound which differs only in the spatial arrangement of the atoms across the stereogenic centers.
There are mainly two forms of stereoisomers cis and trans. Cis-isomers are those where the two bulky or functional groups are arranged on the same side across the stereogenic center; whereas, in trans-isomers the two bulky groups or functional groups are arranged in the opposite sides of stereogenic center.
