Lec17 Solids and its Properties - SOLID AND ITS PROPERTIES...

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LMALaput Chemistry 16 Lecture 17 SOLID AND ITS PROPERTIES 1. Melting Point of Solids 2. Heat Transfer involving Solids 3. Sublimation and Vapor Pressure 4. Phase diagrams 5. Amorphous and Crystalline solids 6. Structures of Crystals 7. Bonding in Solids 8. Band Theory of Metals MELTING POINT •The normal melting point is the temperature at which the solid melts (liquid and solid in equilibrium) at exactly 1.00 atm of pressure. •The melting point increases as the strength of the intermolecular attractions increase. •The normal melting point is the temperature at which the solid melts (liquid and solid in equilibrium) at exactly 1.00 atm of pressure. •The melting point increases as the strength of the intermolecular attractions increase. •The melting point of a solid is same as the freezing point of its liquid. HEAT TRANSFER INVOLVING SOLIDS Heat of fusion is the amount of heat required to melt one gram of a solid at its melting point at constant temperature. Heat of crystallization is the reverse of the heat of fusion. •The molar heat of fusion is the amount of heat required to melt a mole of a substance at its melting point. The molar heat of crystallization is the reverse of molar heat of fusion Calculate the amount of heat required to convert 150.0 g of ice at -10.0°C to water at 40.0° C. Specific heat of ice is 2.09 J/g° C ?J= ( ±²³²´µ) ¶·³²¸´ ¹ º » ¼ ( ² ½) ¾ ¿³ À´ Á ²  ´Ã ?J = ( ±²³²´µ) ¶¿¿À´ ¹ º ¼ ¾ ±³² ´ Á´ ² Ä ´Ã ?J = ( ±²³²´µ) ¶À³ Å´ ¹ º » ¼ (À² ½) ¾ ·³±² ´ Á´ ² Ä ´Ã (3.14 + 5.01 + 2.51) x 10 4 J = 7.83 x 10 4 J
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This note was uploaded on 07/09/2011 for the course SCIENCE 16 taught by Professor Uperg during the Spring '11 term at University of the Philippines Diliman.

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Lec17 Solids and its Properties - SOLID AND ITS PROPERTIES...

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