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15 Nov 2019
Worksheet Entropy Entropy, S, is a measure of how dispersed or spread out a system's energy is among the available energy levels. The number of energy levels and how many are populated depend on a number of factors. As temperature is increased more of the excited state energy levels will be populated Increasing temperature always increases entropy In gaseous system, increasing volume will increase the number of trajectories (energy levels) available to molecules Increasing volume will increase entropy for gases Phase changes (s-â g) result in an increase in the energy levels available to the molecules in a system SsolidsSliqudsSgases Change in the number of moles of gas means a large change in the entropy of the system Molecules with more degrees of freedom have more energy levels Increasing molecular complexity-increasing S Larger atoms (more electrons) have more closely spaced energy levels Increasing atomic weight increasing S Shown below is the heating curve for water. It plots heat added to the system (x-axis) versus temperature (y-axis). specific heat capacity ice 2.09 J/g°C. specific heat capacity water = 4.18 J/g°C specific heat capacity steam = 2.00 J/g°C 4Hfusion 6.02 kJ/mol dHvaporization = 40.7 kJ/mol (004)(o09 92-( -10 1. How much heat is given off when 10.00 g of H20 goes from steam at 110°C to ice at -10°C? logImo 10g -30 hole s
Worksheet Entropy Entropy, S, is a measure of how dispersed or spread out a system's energy is among the available energy levels. The number of energy levels and how many are populated depend on a number of factors. As temperature is increased more of the excited state energy levels will be populated Increasing temperature always increases entropy In gaseous system, increasing volume will increase the number of trajectories (energy levels) available to molecules Increasing volume will increase entropy for gases Phase changes (s-â g) result in an increase in the energy levels available to the molecules in a system SsolidsSliqudsSgases Change in the number of moles of gas means a large change in the entropy of the system Molecules with more degrees of freedom have more energy levels Increasing molecular complexity-increasing S Larger atoms (more electrons) have more closely spaced energy levels Increasing atomic weight increasing S Shown below is the heating curve for water. It plots heat added to the system (x-axis) versus temperature (y-axis). specific heat capacity ice 2.09 J/g°C. specific heat capacity water = 4.18 J/g°C specific heat capacity steam = 2.00 J/g°C 4Hfusion 6.02 kJ/mol dHvaporization = 40.7 kJ/mol (004)(o09 92-( -10 1. How much heat is given off when 10.00 g of H20 goes from steam at 110°C to ice at -10°C? logImo 10g -30 hole s
Casey DurganLv2
15 Nov 2019