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Acetic acid is a common organic acid with the chemical formula CH3COOH. It is a colorless liquid at room temperature and is commonly used as a seasoning and solvent. Acetic acid has specific melting and boiling points, and temperature is an important factor affecting changes in the state of substances

Let's learn about the melting point of acetic acid. The melting point refers to the temperature at which a substance transforms from solid to liquid under a certain pressure. For glacial acetic acid, its melting point is about 16.6 degrees Celsius. When the temperature is below the melting point, glacial acetic acid exists in a solid state; When the temperature exceeds the melting point, acetic acid will melt into a liquid. The existence of a melting point means that acetic acid undergoes a state transition between solid and liquid at a specific temperature

Next, we will explore the boiling point of acetic acid. Boiling point refers to the temperature at which a substance transforms from a liquid state to a gaseous state under a certain pressure. For glacial acetic acid, its boiling point is about 118 degrees Celsius. When the temperature is below the boiling point, acetic acid will remain liquid; When the temperature reaches or exceeds the boiling point, liquid acetic acid will begin to evaporate and form a gaseous state. The existence of boiling point means that acetic acid can transform from liquid to gas at a certain temperature

Temperature is an important factor affecting changes in the state of matter. By controlling the temperature, we can change the state of glacial acetic acid. When the temperature is below the melting point, glacial acetic acid becomes solid and can form glacial acetic acid ice crystals. By heating, the temperature rises above the melting point, and acetic acid will melt into a liquid, which can be used for experiments or in different situations. When the temperature further increases beyond the boiling point, acetic acid will be converted into gas, which can be used for distillation and other processes

To sum up, the melting point of acetic acid is about 16.6 degrees Celsius and the boiling point is about 118 degrees Celsius. Melting point refers to the process from solid to liquid, while boiling point refers to the process from liquid to gas. By controlling the temperature, we can change the state of acetic acid to achieve different applications and experimental purposes. Temperature is an important factor affecting changes in the state of substances. Understanding and mastering the melting and boiling points of substances can help us better apply chemical knowledge and play its role in life and work.