Question

In what physical state does chlorine exist at -65 °C? TABLE 4.1 Physical Properties of Chlorine, Water, Sugar, and Acetic Acid Boiling point(℃) -34.6 Physical Melting Odor Substance Color Chlorine Yellowish-green Sharp Water Sugar Acetic acid Colorles Taste state point (°C) Sharp,Gas (20°C) -101.6 suffocating Odorless Odorless sour Colorless White Tasteless Liquid Sweet 100.0 Decomposes 0.0 Solid 170-186 118.0 Like vinegar Sour Liquid 16.7

Answer 1

The melting point is the temperature at which a solid becomes a liquid at a fixed pressure, usually standard

pressure.

From the physical properties data, it can be seen that chlorine has a melting point  -101.6 °C, that is it remains solid at the temperature below -101.6 °C.

The boiling point is the temperature at which a liquid boils at a fixed pressure, especially under standard atmospheric conditions.

From the physical properties data, it can be seen that chlorine has a boiling point  -34.6 °C, that is it remains liquid at the temperature between -101.6 °C to -34.6 °C.

Since -65 °C lie  -101.6 °C to -34.6 °C physical state of chlorine at this stage is "liquid".