Difference between revisions of "Chem341:NMR workshop/Exercise 4d"
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{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 33: | Line 33: | ||
- 3 | - 3 | ||
|| Wrong! Remember it's n+1 | || Wrong! Remember it's n+1 | ||
| − | + | + 4 | |
|| Correct! | || Correct! | ||
{What do you call a peak with that multiplicity? | {What do you call a peak with that multiplicity? | ||
|type="()"} | |type="()"} | ||
| − | + | - singlet | |
|| Wrong! Look again... | || Wrong! Look again... | ||
- doublet | - doublet | ||
| Line 44: | Line 44: | ||
- triplet | - triplet | ||
|| Wrong! Look again... | || Wrong! Look again... | ||
| − | + | + quartet | |
|| Correct! Now go on to the '''[[Chem341:NMR workshop/Exercise 4e|next question]]'''. | || Correct! Now go on to the '''[[Chem341:NMR workshop/Exercise 4e|next question]]'''. | ||
- multiplet | - multiplet | ||
Latest revision as of 01:25, 26 October 2009
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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 || Not usually with such a low multiplicity, assuming the peak is clean. Look again... </quiz>
