Question
Which substance would undergo a change of state from liquid to gas if the temperature was increased from −50°C to −20°C?
nitrogen
water
bromine
chlorine
nitrogen
water
bromine
chlorine
Answers
GPT-4o mini
To determine which substance would undergo a change of state from liquid to gas when the temperature is increased from -50°C to -20°C, we need to look at the boiling points of each substance:
- **Nitrogen**: Boiling point is approximately -196°C. At -50°C, nitrogen is a gas, and it would not be in a liquid state at any point in this temperature range.
- **Water**: Boiling point is 100°C. At -50°C and -20°C, water is in a solid state (ice) and does not undergo a change to gas.
- **Bromine**: Boiling point is approximately 58.8°C. At -50°C and -20°C, bromine is in a liquid state, but would not evaporate at these temperatures.
- **Chlorine**: Boiling point is approximately -34°C. At -50°C, chlorine is in a liquid state. When the temperature is increased to -20°C, chlorine would change to gas since -20°C is above its boiling point.
Thus, the substance that would undergo a change of state from liquid to gas when the temperature is increased from -50°C to -20°C is **chlorine**.
- **Nitrogen**: Boiling point is approximately -196°C. At -50°C, nitrogen is a gas, and it would not be in a liquid state at any point in this temperature range.
- **Water**: Boiling point is 100°C. At -50°C and -20°C, water is in a solid state (ice) and does not undergo a change to gas.
- **Bromine**: Boiling point is approximately 58.8°C. At -50°C and -20°C, bromine is in a liquid state, but would not evaporate at these temperatures.
- **Chlorine**: Boiling point is approximately -34°C. At -50°C, chlorine is in a liquid state. When the temperature is increased to -20°C, chlorine would change to gas since -20°C is above its boiling point.
Thus, the substance that would undergo a change of state from liquid to gas when the temperature is increased from -50°C to -20°C is **chlorine**.