Simple Ochem Question off TBR CBT 5

[crazyasian]

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So on TBR CBT 5 there was a question about peak area ratio. The question asked what the peak area ratio. It said that we would know that its a quartet that has a 1:3:3:1 ratio by visually looking at it. looking at it I would have guessed it was a 1:2:2:1 ratio. Don't we just look at the peaks relative to each other and if one peak is say twice as large as the other then its a 1:2 ratio. or am I doing this wrong? Is there an easier way to confirm what we are seeing visually?

 

[BerkReviewTeach]

So on TBR CBT 5 there was a question about peak area ratio. The question asked what the peak area ratio. It said that we would know that its a quartet that has a 1:3:3:1 ratio by visually looking at it. looking at it I would have guessed it was a 1:2:2:1 ratio. Don't we just look at the peaks relative to each other and if one peak is say twice as large as the other then its a 1:2 ratio. or am I doing this wrong? Is there an easier way to confirm what we are seeing visually?

The problem is that its a ratio of the areas, not the heights. Even though the height is twice as tall, the area might be a little more than twice as large. Go with your knowledge of a 1:3:3:1 ratio.