You have an unknown with an observed melting point of 90-93°C. Is your unknown compound A with a reported melting point of 95.5-96°C or compound B with a reported melting point of 90.5-91°C? Explain.
I would think your compound is compound A. Compound A with a small amount of impurity will cause it to have a lower melting point in the range of your m.p. AND to be less sharp. I wouldn't think it would be compound B because the melting point of your unknown is ABOVE mp of compound B and your unknown as range not nearly as sharp as A or B. Impurities cause mp to be lower, not higher.
The compound is most likely to be A.This is because Sample A containing little impurities will cause a reduction in its melting point not an increase as it would apply for Sample B.
To determine whether the unknown compound is A or B, we need to compare the observed melting point range with the reported melting points of both compounds.
The observed melting point range of the unknown compound is 90-93°C.
Compound A has a reported melting point range of 95.5-96°C, which is higher than the observed range of the unknown compound. Therefore, it is unlikely that the unknown compound is A.
Compound B, on the other hand, has a reported melting point range of 90.5-91°C, which falls within the observed range of the unknown compound. Therefore, it is more likely that the unknown compound is compound B, since their melting point ranges overlap.
However, it is important to note that other factors such as impurities or experimental conditions could also affect the observed melting point, so further tests or analysis may be required to confidently identify the unknown compound.
To determine if the unknown compound corresponds to compound A or compound B based on the observed melting point, we need to compare the observed melting point range with the reported melting point ranges of both compounds.
First, let's consider compound A. The reported melting point range for compound A is 95.5-96°C. Since the observed melting point range of the unknown compound is lower (90-93°C), it suggests that the unknown compound is not compound A. This is because the observed melting point range is outside the reported range for compound A.
Now, let's consider compound B. The reported melting point range for compound B is 90.5-91°C. The observed melting point range of the unknown compound (90-93°C) falls within the reported range for compound B. This indicates that the unknown compound is likely to be compound B.
Therefore, based on the observed melting point range and the reported melting point ranges of both compounds, it is more likely that the unknown compound corresponds to compound B with a reported melting point range of 90.5-91°C.