Given,
Amount of water = 320 g. = (320 g./18 g/mol.) = 17.8 moles
Initial temperature = 25°C = (273 + 25) K = 298 K
Final temperature = 50°C = (273 + 50) K = 323 K
Cp (liquid water) = [66.54 + 28.1*10-3 * T] Jmol-1K-1
Cp (ice) = 37.8 Jmol-1K-1, DH°fus = 6012 Jmol-1
4) Calculate the change of enthalpy and entropy of a 320 g of water after its...
calculate change in entropy and change in enthalpy for freezing 1 mol of water at -10C and 1 atm. Cp,m is 75.3J/kmol for liquid water and 37.7J/Kmol for ice
Physical Chemistry
Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol K1 and 31.75 J mol K, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g1. The molar mass of aluminum is...
Part A Calculate the enthalpy change, AH, for the process in which 16.0 g of water is converted from liquid at 15.2 °C to vapor at 25.0 °C. For water, AH vap - 44,0 kJ/mol at 25.0 °C and C = 4.18 J/(8°C) for H, O(1).
What is the enthalpy change (KJ) during the process in which 200.0 g of water at 60.0 Celsius is cooled to -25 Celsius? The specific heats of ice, and liquid water, and 2.03 J/g-K, and 4.18 J/g-K, respectively. For H 2 O, delta H fus = 6.01 kJ/mol
Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol' K and 31.75 J mol' K, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g! The molar mass of aluminum is 26.98 g...
Part II-Short Answer 13) Answer the following guestions about entropy and enthalpy (6 pts) A) The boiling temperature of liquid ethanol is 78.45 "C and the AHyan is 38.56 kJ/mol. Calculate the ASyap for ethanol. AS13481,u22 l 3H-TS AHvap tb T AS= TOH Vap 1091md? 03 351.45K(38-50k3mol) B) ASvap for oxygen is 37.8 J/mol K at its boiling temperature of -182.9 C Calculate the change in entropy of the oxvgen when 7,40 moles of gas is condensed into liquid oxygen...
The enthalpy of vaporization of water at 100.0°C is 40.75kJ/mol. What is the entropy change in the surroundings when one mole of water vapor condenses at 100.0°C in a large room maintained at a temperature of 39.00°C? (answer in J/K) Answer: 131 Check
21. What is the enthalpy change (KJ) during the process in which 200.0 g of water at 60.0 °C is cooled to -25°C? The specific heats of ice, and liquid water, and 2.03 J/g-K, and 4.18 J/g-K, respectively. For H,O, AH = 6.01 kJ/mol A. 127 B. -127 C. 117 D. -117
21. What is the enthalpy change (KJ) during the process in which 200.0 g of water at 60.0 °C is cooled to -25°C? The specific heats of ice, and liquid water, and 2.03 J/g-K, and 4.18 J/g-K, respectively. For H O, AH = 6.01 kJ/mol 2 ***"fas A. 127 B. -127 C. 117 D. -117
Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 ℃ to a final temperature of 750 ℃. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol-1 K-1 and 31.75 J mol-1 K-1, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 ℃) is 396.57 J g-1. The molar mass of aluminum is 26.98 g...