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Calculate the heat energy released when 19.8 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm heat capacity of Hg(1) 28.0 J/(mol·K) melting point 234.32 K enthalpy of fusion 2.29 kJ/mol

Calculate the heat energy released when 19.8 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm heat capacity of Hg(1) 28.0 J/(mol·K) melting point 234.32 K enthalpy of fusion 2.29 kJ/mol

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Calculate the heat energy released when 19.8 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm 4p = kJ heat capacity of Hg(1) 28.0 J/(mol-K) melting point 234.32 K enthalpy of fusion 2.29 kJ/mol
Transcribed Image Text:Calculate the heat energy released when 19.8 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm 4p = kJ heat capacity of Hg(1) 28.0 J/(mol-K) melting point 234.32 K enthalpy of fusion 2.29 kJ/mol
Expert Solution
Step 1

The moles of mercury is calculated

The heat released is calculated using  the given calorimetry data

Mass of mercury=19.8 g

Moles= 19.8/200.6=0.0718 mol

Given data:

Heat capacity of Hg(l), C=28.0 J/(mol⋅K)

Melting point, Tm=234.32 K

Enthalpy of fusion, ∆H°fus=2.29 kJ/mol

Temperature, T=25.00 + 273.15 =298.15 K

 

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