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| | You should answer each question correctly before moving onto the next. | | You should answer each question correctly before moving onto the next. |
| | <quiz> | | <quiz> |
| − | {For the left hand CH<sub>3</sub>, how many hydrogens are on the neighboring carbon?|type="()"} | + | {For the left hand CH<sub>3</sub>, how many hydrogens are on the neighboring carbon? |
| − | + 0 | + | |type="()"} |
| − | || Correct! Now go on to the next question. | + | + Zero |
| | + | || Correct! Now go on to the '''[[Chem341:NMR workshop/Exercise 4b|next question]]'''. |
| | - 1 | | - 1 |
| | || Wrong! Look again... | | || Wrong! Look again... |
| Line 38: |
Line 39: |
| | - 4 | | - 4 |
| | || Wrong! Look again... | | || 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 CH<sub>3</sub>, what is the multiplicity?|type="()"}
| |
| − | + 0
| |
| − | || Wrong! Remember it's n+1
| |
| − | - 1
| |
| − | || Correct! Now go on to the next question.
| |
| − | - 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...
| |
| − |
| |
| − | {For the CH<sub>2</sub>, how many hydrogens are on the neighboring carbon?|type="()"}
| |
| − | + 0
| |
| − | || 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 CH<sub>2</sub>, what is the multiplicity?|type="()"}
| |
| − | + 0
| |
| − | || 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! Now go on to the next question.
| |
| − |
| |
| − | {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...
| |
| − |
| |
| − | {For the right hand CH<sub>3</sub>, how many hydrogens are on the neighboring carbon?|type="()"}
| |
| − | + 0
| |
| − | || 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 CH<sub>3</sub>, what is the multiplicity?|type="()"}
| |
| − | + 0
| |
| − | || Wrong! Remember it's n+1
| |
| − | - 1
| |
| − | || Wrong! Remember it's n+1
| |
| − | - 2
| |
| − | || Wrong! Remember it's n+1
| |
| − | - 3
| |
| − | || Correct! Now go on to the next question.
| |
| − | - 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! Now go on to the next question.
| |
| − | - quartet
| |
| − | || Wrong! Look again...
| |
| − | - multiplet
| |
| − | || Wrong! Look again...
| |
| − |
| |
| | </quiz> | | </quiz> |
| | | | |
| | [[Category:Chemistry 341]] | | [[Category:Chemistry 341]] |
Latest revision as of 01:46, 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>
