Final answer:
Water is a solid at -10°C and 10°C, a liquid at 50°C and 90°C, and a gas at 110°C and 120°C. The phase of water at -10°C is solid, at 10°C and 50°C it is liquid, and at 90°C it is also liquid. At 110°C and 120°C, water is in the gas phase. The correct answer is option (d).
Step-by-step explanation:
We can use the phase diagram to identify the physical state of water under specified conditions of pressure and temperature. At -10°C, water exists only as a solid (ice), at 10°C it also exists as a solid, at 50°C it exists as a liquid, at 90°C it still exists as a liquid, at 110°C it exists as a gas, and at 120°C it also exists as a gas. So the correct answer is (d) -10°C: Solid, 10°C: Solid, 50°C: Liquid, 90°C: Liquid, 110°C: Gas, 120°C: Gas.
The phase of water at -10°C is solid, at 10°C and 50°C it is liquid, and at 90°C it is also liquid. At 110°C and 120°C, water is in the gas phase. The correct answer is option (d).
The phase of water at various temperatures can be determined by understanding its phase diagram. The phase changes happen as follows:
-10°C: Water is in the solid state (ice), because it is below 0°C, which is the freezing point of water at standard atmospheric pressure.
10°C: Water is in the liquid state as it is above 0°C but below 100°C, the normal boiling point at atmospheric pressure.
50°C: Water remains in the liquid state as it is still between the freezing and boiling points.
90°C: Water is still in the liquid phase for the same reasons as at 50°C.
110°C and 120°C: At these temperatures, water has transitioned to the gas phase (water vapor), because these temperatures are above the normal boiling point of water.
Considering these phase changes, the correct answer detailing the phase of water at the given temperatures is:
-10°C: Solid
10°C: Liquid
50°C: Liquid
90°C: Liquid
110°C: Gas
120°C: Gas
Therefore, the correct option is (d) -10°C: Solid, 10°C: Solid, 50°C: Liquid, 90°C: Liquid, 110°C: Gas, 120°C: Gas.