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Question
At which temperature the density of water will be highest?
At which temperature the density of water will be highest?
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Solution
The correct option is B 4oC
In ice, the water molecules are in a crystal structure that has a lot of empty space.
When the ice melts to liquid water, the structure collapses and the density of the liquid increases.
At temperatures well above freezing, the molecules move faster and get further apart. The density decreases as temperature increases.
Now, let's cool the water.
As the temperature of warm water decreases, the water molecules slow down and the density increases.
At 4 °C, the clusters start forming.
Cluster formation is the bigger effect, so the density starts to decrease. Thus, the density of water is a maximum at 4 °C.
Option (B) is correct here.
In ice, the water molecules are in a crystal structure that has a lot of empty space.
When the ice melts to liquid water, the structure collapses and the density of the liquid increases.
At temperatures well above freezing, the molecules move faster and get further apart. The density decreases as temperature increases.
Now, let's cool the water.
As the temperature of warm water decreases, the water molecules slow down and the density increases.
At 4 °C, the clusters start forming.
Cluster formation is the bigger effect, so the density starts to decrease.
Thus, the density of water is a maximum at 4 °C.
Option (B) is correct here.
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