Difference between revisions of "Chem341:NMR workshop/Exercise 4"
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{For the left hand CH<sub>3</sub>, what is the multiplicity? | {For the left hand CH<sub>3</sub>, what is the multiplicity? | ||
|type="()"} | |type="()"} | ||
| − | + | + | + Zero |
|| Wrong! Remember it's n+1 | || Wrong! Remember it's n+1 | ||
- 1 | - 1 | ||
| Line 72: | Line 72: | ||
{For the CH<sub>2</sub>, how many hydrogens are on the neighboring carbon? | {For the CH<sub>2</sub>, how many hydrogens are on the neighboring carbon? | ||
|type="()"} | |type="()"} | ||
| − | + | + | + Zero |
|| Wrong! Look again... | || Wrong! Look again... | ||
- 1 | - 1 | ||
| Line 88: | Line 88: | ||
{For the CH<sub>2</sub>, what is the multiplicity? | {For the CH<sub>2</sub>, what is the multiplicity? | ||
|type="()"} | |type="()"} | ||
| − | + | + | + Zero |
|| Wrong! Remember it's n+1 | || Wrong! Remember it's n+1 | ||
- 1 | - 1 | ||
| Line 115: | Line 115: | ||
{For the right hand CH<sub>3</sub>, how many hydrogens are on the neighboring carbon? | {For the right hand CH<sub>3</sub>, how many hydrogens are on the neighboring carbon? | ||
|type="()"} | |type="()"} | ||
| − | + | + | + Zero |
|| Wrong! Look again... | || Wrong! Look again... | ||
- 1 | - 1 | ||
| Line 130: | Line 130: | ||
{For the right hand CH<sub>3</sub>, what is the multiplicity? | {For the right hand CH<sub>3</sub>, what is the multiplicity? | ||
|type="()"} | |type="()"} | ||
| − | + | + | + Zero |
|| Wrong! Remember it's n+1 | || Wrong! Remember it's n+1 | ||
- 1 | - 1 | ||
Revision as of 00:07, 26 October 2009
This page is to help you to answer Exercise 4 in the Chem 341 NMR Workshop. The guided help is (for the first structure only) below the images.
Structures
Error: Image is invalid or non-existent.
First structure
You should answer each question correctly before moving onto the next. <quiz> {For the left hand CH3, how many hydrogens are on the neighboring carbon? |type="()"} + Zero || Correct! Now go on to the next question. - 1 || Wrong! Look again... - 2 || Wrong! Look again... - 3 || Wrong! Look again... - 4 || Wrong! Look again... </quiz> Now apply the n+1 rule from above to calculate the multiplicity, where n = the no. of Hs on neighboring carbons.}
<quiz> {For the left hand CH3, what is the multiplicity? |type="()"} + Zero || Wrong! Remember it's n+1 - 1 || Correct! - 2 || Wrong! Remember it's n+1 - 3 || Wrong! Remember it's n+1 - 4 || Wrong! Remember it's n+1
{What do you call a peak with that multiplicity? |type="()"} + singlet || Correct! Now go on to the next question. - doublet || Wrong! Look again... - triplet || Wrong! Look again... - quartet || Wrong! Look again... - multiplet || Wrong! Look again... </quiz> <quiz> {For the CH2, how many hydrogens are on the neighboring carbon? |type="()"} + Zero || Wrong! Look again... - 1 || Wrong! Look again... - 2 || Wrong! Look again... - 3 || Correct! Now go on to the next question. - 4 || Wrong! Look again... </quiz> Now apply the n+1 rule from above to calculate the multiplicity, where n = the no. of Hs on neighboring carbons.
<quiz> {For the CH2, what is the multiplicity? |type="()"} + Zero || Wrong! Remember it's n+1 - 1 || Wrong! Remember it's n+1 - 2 || Wrong! Remember it's n+1 - 3 || Wrong! Remember it's n+1 - 4 || Correct!
{What do you call a peak with that multiplicity? |type="()"} + singlet || Wrong! Look again... - doublet || Wrong! Look again... - triplet || Wrong! Look again... - quartet || Correct! Now go on to the next question. - multiplet || Wrong! Look again... </quiz> <quiz> {For the right hand CH3, how many hydrogens are on the neighboring carbon? |type="()"} + Zero || Wrong! Look again... - 1 || Wrong! Look again... - 2 || Correct! Now go on to the next question. - 3 || Wrong! Look again... - 4 || Wrong! Look again... </quiz> Now apply the n+1 rule from above to calculate the multiplicity, where n = the no. of Hs on neighboring carbons. <quiz> {For the right hand CH3, what is the multiplicity? |type="()"} + Zero || Wrong! Remember it's n+1 - 1 || Wrong! Remember it's n+1 - 2 || Wrong! Remember it's n+1 - 3 || Correct! - 4 || Wrong! Remember it's n+1
{What do you call a peak with that multiplicity? |type="()"} + singlet || Wrong! Look again... - doublet || Wrong! Look again... - triplet || Correct! You successfully analyzed the first structure. - quartet || Wrong! Look again... - multiplet || Wrong! Look again...
</quiz>
