Best answer: How can melting and boiling points be used to determine the identity of a substance?

When they see a solid melt, they record the temperature as the melting point. When they see a liquid boil, they record the temperature as the boiling point. Then, you could compare their melting point to a chart of known melting points to determine their identity.

How can the melting point be used to identify a substance?

The melting point is a physical property of a solid and can be used to help identify a substance. In practice, a solid usually melts over a range of temperatures rather than at one specific temperature. … For example, if an unknown solid melts at 102-106° C, the 4° range suggests that the sample is impure.

How can melting and boiling point determinations be used in identifying and or characterizing unknown compounds?

How can melting point be used in identifying and/or characterizing unknown compounds?  Compounds are identified because each compound have different melting points. The melting point value can then be matched to a table of melting points to identify the unknown.

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Why is boiling point used to identify a substance?

Besides indicating the physical state (liquid or gas) of a substance at ambient or room temperature, boiling point serves as an indicator of volatility even for laymen, with higher boiling points indicating lower volatility. … Knowing the boiling point of a chemical is also very important for its storage & transport.

How can melting point be used to determine if these samples contain the same substance or two different substances?

If the melting point of the mixture remains the same, the two substances are identical. If the melting point is depressed, they are two different substances.

What does melting point tell you?

melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. … The melting temperature of crystalline solids is a characteristic figure and is used to identify pure compounds and elements. Most mixtures and amorphous solids melt over a range of temperatures.

How melting point is used in identification of organic compound?

The melting point of an organic solid can be determined by introducing a tiny amount into a small capillary tube, attaching this to the stem of a thermometer centred in a heating bath, heating the bath slowly, and observing the temperatures at which melting begins and is complete.

Do you think that melting point alone is a reliable way to identify a solid compound explain?

In most cases, the melting point alone will not enable you to identify a compound. Millions of solid organic compounds, and their melting points, are known. Perhaps 10,000 of these will have the same melting point as your unknown compound.

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Why is boiling and melting point of a substance important?

The boiling point of organic compounds will provide valuable details about their physical and structural properties. Boiling point assists in the recognition and characterization of a compound. A liquid at higher pressure has a higher boiling point than when the atmospheric pressure of that liquid is lower.