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If temperature of water increases then thermal conductivity of water
- a)increases continuously
- b)remains constant
- c)decreases continuously
- d)initially increases, achieves a maxima and then decreases
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
If temperature of water increasesthen thermal conductivity of watera)i...
Though for liquids, thermal conductivity decreases with rise in temperature but water is an exceptional case due to bonding between oxygen atom of one molecule and hydrogen atom of other. As a result with rise in temperature, thermal conductivity of water increases from 0°C TO 4,4°C achieves a maxima and then decreases.
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If temperature of water increasesthen thermal conductivity of watera)i...
Explanation:
Thermal conductivity is the ability of a material to conduct heat. In the case of water, it is affected by various factors such as temperature, pressure, salinity, and dissolved gases.
Effect of Temperature on Thermal Conductivity of Water:
When the temperature of water increases, its thermal conductivity also increases. This is because the molecules of water gain more energy and move faster, leading to an increase in the rate of heat transfer. However, this increase in thermal conductivity is not constant and varies with temperature.
Initial Increase:
At lower temperatures, the thermal conductivity of water increases rapidly with temperature. This is because the water molecules are closely packed, and the intermolecular forces are strong. As the temperature increases, the water molecules move farther apart and the intermolecular forces weaken. This leads to a decrease in thermal conductivity.
Achieves a Maxima:
At a certain temperature, the thermal conductivity of water reaches a maximum value. This temperature is known as the maximum density temperature (MDT) or the temperature of maximum density (TMD). At this temperature, the water molecules are arranged in a way that maximizes the intermolecular forces and results in a high thermal conductivity.
Decreases Continuously:
Beyond the MDT, the thermal conductivity of water decreases continuously with increasing temperature. This is because the water molecules move farther apart and the intermolecular forces weaken, resulting in a decrease in thermal conductivity.
Conclusion:
Hence, the correct answer is option D- initially increases, achieves a maxima and then decreases.
Thermal conductivity is the ability of a material to conduct heat. In the case of water, it is affected by various factors such as temperature, pressure, salinity, and dissolved gases.
Effect of Temperature on Thermal Conductivity of Water:
When the temperature of water increases, its thermal conductivity also increases. This is because the molecules of water gain more energy and move faster, leading to an increase in the rate of heat transfer. However, this increase in thermal conductivity is not constant and varies with temperature.
Initial Increase:
At lower temperatures, the thermal conductivity of water increases rapidly with temperature. This is because the water molecules are closely packed, and the intermolecular forces are strong. As the temperature increases, the water molecules move farther apart and the intermolecular forces weaken. This leads to a decrease in thermal conductivity.
Achieves a Maxima:
At a certain temperature, the thermal conductivity of water reaches a maximum value. This temperature is known as the maximum density temperature (MDT) or the temperature of maximum density (TMD). At this temperature, the water molecules are arranged in a way that maximizes the intermolecular forces and results in a high thermal conductivity.
Decreases Continuously:
Beyond the MDT, the thermal conductivity of water decreases continuously with increasing temperature. This is because the water molecules move farther apart and the intermolecular forces weaken, resulting in a decrease in thermal conductivity.
Conclusion:
Hence, the correct answer is option D- initially increases, achieves a maxima and then decreases.
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If temperature of water increasesthen thermal conductivity of watera)increases continuouslyb)remains constantc)decreases continuouslyd)initially increases, achieves a maxima and then decreasesCorrect answer is option 'D'. Can you explain this answer?
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