On, also at cperature reached by the resulting solution? (Assume Is ti6 heat los

Question

On, also at cperature reached by the resulting solution? (Assume Is ti6 heat loss to the container, that the specific heat of the final solution is 4.18 J/g C, and that the density of the final solution is that of water.) A) B) 26.06°C C) 29.19°C D) 32.35°G E) 36.57°C oC 0. 00 29. The heat of solution of NH NO, is 26.2 kJ/mol. Is heat evolved or absorbed when a solution of NH4NOs is diluted by addition of more water? A 262 g piece of copper metal is heated from 21.5°C to 201.6°C, Calculate the amount of heat absorbed by the metal. The specific heat of Cu is 0.385 J/g 30. °C Page 7

Explanation / Answer

29) at infinite dilution because of excess of water there is no absorption or evolution of heat energy. Because there is no formatiomn or breaking of ionic bonds .

30) heat absorbed = mcp?T

= 26.2 *0.385*(201.6-21.5)

=1816.67 joules

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