Difference between revisions of "Chem341:NMR workshop/Exercise 4"

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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 00:46, 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>