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Chapter 10: Q67E. (page 591)

Explain why ice, which is a crystalline solid, has a melting temperature of 0 掳C, whereas butter, which is an amorphous solid, softens over a range of temperatures.

Short Answer

Expert verified

Crystalline solid requires a range of temperatures to be overcome.

Step by step solution

01

To explain why ice has a melting temperature of 0 °C

Ice has a crystalline structure that is stabilised by hydrogen bonding. Strength of these intermolecular forces are comparable and therefore requires a fixed amount of energy to overcome. Consequently, ice melts at a single temperature.

On the other hand, butter experience varied Van der wall attractions and of varied strength.

Hence it requires a range of temperature to be overcome. Consequently, it melts over a wide temperature range.

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