Bromine (Br2) Has A Freezing Point Of -7 Degrees Celsius And A Boiling Point Of 60 Degrees Celsius. Indicate The State Or Change Of State Occurring At Ed Each Temperature. 1.00 Boiling Melting Solid Iquid Gas 7 Degrees Celsius Drag Answer Here 30 Degrees Celsius Drag Answer Here -15 Degrees Celsius Drag Answer Here 70 Degrees CelsiusDrag Answer Here 60
The Correct Answer and Explanation is :
Correct Answers:
- 7 Degrees Celsius: Liquid
Bromine is in a liquid state at this temperature because it lies between the freezing point (-7°C) and boiling point (60°C). - 30 Degrees Celsius: Liquid
This temperature also falls between the freezing and boiling points, so bromine remains a liquid. - -15 Degrees Celsius: Solid
Since this temperature is below the freezing point (-7°C), bromine exists as a solid. - 70 Degrees Celsius: Gas
This temperature is above the boiling point (60°C), so bromine is in the gaseous state. - 60 Degrees Celsius: Boiling
At this temperature, bromine undergoes a phase transition from liquid to gas (boiling).
Explanation (300 Words):
Bromine is a diatomic molecule with distinct phase changes occurring at specific temperatures due to its physical properties. The freezing point of bromine is -7°C, and its boiling point is 60°C. Between these temperatures, bromine exists as a liquid.
- At 7°C, bromine is in its liquid phase because this temperature is above the freezing point (-7°C) and below the boiling point (60°C). No phase change occurs, and bromine remains a liquid.
- Similarly, at 30°C, bromine continues to exist as a liquid. This temperature also lies comfortably within the liquid range of bromine.
- At -15°C, bromine becomes a solid. Any temperature below the freezing point (-7°C) causes the liquid bromine to freeze and solidify.
- At 70°C, bromine exists as a gas because it exceeds the boiling point of 60°C. At this temperature, liquid bromine has fully transitioned into the gaseous phase.
- At exactly 60°C, bromine undergoes boiling, a process where it changes from a liquid to a gas. Boiling occurs when the temperature reaches the boiling point, and the molecules gain enough energy to overcome intermolecular forces, transitioning into the vapor phase.
These phase transitions—freezing, melting, and boiling—are governed by temperature changes and the energy absorbed or released. Solid bromine melts into liquid at the freezing point, and liquid bromine vaporizes into gas at the boiling point. Between these transitions, bromine remains stable in the corresponding phase.