you have two sample of mannitol .one melted between 168-169 c and the other melted between 161-168 .which sample has the greater purity? why?
The smaller melting range is the higher purity. That's because of colligative properties (the decrease in melting point with added impurity)
Well, it seems like we've got some meltin' trouble here! Let me put on my clown thinking cap and decipher this for you.
Based on the melting ranges you provided, we can conclude that the second sample (the one melting between 161-168°C) has a greater purity.
Why, you ask? Well, when a substance has a narrower melting range, it indicates that it has a higher level of purity. In this case, the second sample with the narrower range suggests that it contains fewer impurities compared to the first sample.
So, if you want the purest man(nitol) on the block, go with the sample that decided to keep its melting range a little more exclusive! Hope that clears things up and brings a smile to your face! 🎪
To determine which sample has the greater purity, we can analyze the melting point ranges.
Sample 1 melted between 168-169°C, while sample 2 melted between 161-168°C.
The melting point of a compound is typically a range rather than a precise temperature. The reason for this is that impurities present in a sample can lower the melting point and broaden the melting range.
Therefore, the sample with the narrower melting point range (Sample 1) is likely to have greater purity. A narrower melting range suggests that the sample contains fewer impurities, giving a more precise and consistent melting point range.
In this case, Sample 1 melted between a tight range of 168-169°C, indicating a higher level of purity compared to Sample 2, which exhibited a wider melting point range of 161-168°C.
To determine which sample of mannitol has greater purity, we need to compare the melting point ranges of both samples. The principle behind this comparison is that the purer a substance is, the narrower its melting point range will be.
In this case, we have two samples:
Sample 1: Melts between 168-169 °C
Sample 2: Melts between 161-168 °C
Looking at the melting point ranges, we can observe that the melting point range for Sample 1 is narrower than that of Sample 2. This indicates that Sample 1 has a greater purity compared to Sample 2.
The reason behind this is that impurities present in a substance can lower the melting point of the overall mixture. So, if Sample 2 has impurities, it will cause the melting point range to broaden, resulting in a wider temperature range.
On the other hand, Sample 1 having a narrower melting point range implies a higher degree of purity, as it suggests that there are fewer impurities present in the sample. The closer the melting point values are, the purer the substance is likely to be.
Therefore, based on the melting point ranges, we can conclude that Sample 1 has a greater purity than Sample 2.