IF WE HAVE TWO SUBESTANCE(A/B)THE MELTING POINT A IS 125 AND FOR B THE M.P IS UNKNOWN,HOW COULD KNOW WE WITH HERE A/B ARE THE SAME SUB.OR DIFFRENT
To determine if substances A and B are the same or different, you can compare their melting points. If the melting point of substance A is known to be 125 degrees, and the melting point of substance B is unknown, there are a few methods you can use to determine if A and B are the same or different:
1. Literature search: You can consult scientific literature or databases to find the known melting point ranges for various substances. By comparing the unknown melting point of substance B with those reported in literature, you can determine if they fall in the same range.
2. Experimental comparison: You can perform an experiment by testing the melting points of substances A and B using the same measurement techniques. If the measured melting point of substance B is close to 125 degrees, there is a higher chance that A and B are the same substance.
3. Additional characterization techniques: Apart from melting point, you can also perform other characterization techniques such as spectroscopy (e.g. infrared spectroscopy or nuclear magnetic resonance) or chromatography (e.g. thin-layer chromatography or gas chromatography) to compare the chemical composition of substances A and B. This information can help confirm if A and B are the same compound or different.
Remember, a single melting point measurement is not enough to definitively determine if two substances are the same or different. Multiple data points and comparison with known information or additional characterization techniques are necessary for a more accurate conclusion.