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Chapter 12: Q12.74P (page 496)

Describe in molecular terms what occurs when the ice melts.

Short Answer

Expert verified

In molecular terms, when the ice melts the hexagonal arrangement of ice disrupts which leads to a decrease in the density of ice, thus converting solid ice to liquid water.

Step by step solution

01

Ice

In the solid state of water, i.e., ice, the intermolecular H-bonding interactions lead to a highly ordered 3-D structure in which one water molecule is surrounded by four water molecules. It should be noted that the ice has a relatively lower density than liquid water.

02

When an ice melt

On increasing the temperature, when the ice starts melting, the hexagonal arrangement of ice gets disrupted, thus breaking the H-bonding between the molecules. This leads to reforming of the H-bonds but with no ordered less dense liquid water.

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