Melting point of ice decreases witha)Decrease in pressureb)Increase in temperaturec)Decrease in temperatured)Increase in pressureCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Pressure is directly proportional to temperature.  Hence when pressure increases,  temperature of ice increases and it starts to melt.

Answer

As we increase the pressure ,temperature also increases bcoz both are directly proportional to each other .As temperature increases ice starsts melting

Answer

Melting point of ice decreases with an increase in pressure.

Explanation:
When a substance changes from a solid to a liquid, it undergoes a phase transition called melting. The melting point is the temperature at which this transition occurs for a given substance. In the case of ice, the melting point is the temperature at which it changes from a solid state to a liquid state, which is 0 degrees Celsius (32 degrees Fahrenheit) at standard atmospheric pressure.

However, when pressure is applied to ice, it can have a significant effect on its melting point. Here's how it happens:

1. Effect of Pressure on the Structure of Ice:
Ice is a crystalline solid composed of water molecules arranged in a specific pattern. At standard atmospheric pressure, the water molecules in ice form a hexagonal lattice structure, known as ice I_h. Each water molecule is connected to four neighboring water molecules through hydrogen bonds.

When pressure is applied to ice, it compresses the lattice structure, causing the water molecules to come closer together. This compression leads to a decrease in the space between the water molecules and an increase in the strength of the hydrogen bonds.

2. Effect on Melting Point:
The increase in pressure on the ice lattice hinders the motion of water molecules, making it more difficult for them to break free from their fixed positions and transition into the liquid phase. As a result, a higher temperature is required to overcome the increased intermolecular forces and achieve the melting process.

Conversely, when pressure is decreased, the ice lattice expands, and the water molecules have more freedom to move. This makes it easier for them to break free from their fixed positions and transition into the liquid phase, resulting in a lower melting point.

Therefore, an increase in pressure leads to an increase in the melting point of ice, while a decrease in pressure leads to a decrease in the melting point.

Conclusion:
In summary, the melting point of ice decreases with an increase in pressure due to the compression of the lattice structure and the increased intermolecular forces. This phenomenon is important in various fields, such as ice skating or the study of Earth's polar regions, where pressure can affect the behavior and properties of ice.

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