Question: The standard enthalpy of formation of H2O l at 298 K
The standard enthalpy of formation of H2O(l) at 298 K is –285.8 kJ/ mol. Calculate the change in internal energy for the following process at 298 K and 1 atm: H2O(l) → H2(g) + ½ O2(g) ΔEo = ?
Answer to relevant QuestionsA balloon filled with 39.1 moles of helium has a volume of 876 L at 0.08C and 1.00 atm pressure. At constant pressure, the temperature of the balloon is increased to 38.08C, causing the balloon to expand to a volume of 998 ...The enthalpy of neutralization for the reaction of a strong acid with a strong base is 256 kJ/ mol of water produced. How much energy will be released when 200.0 mL of 0.400 M HNO3 is mixed with 150.0 mL of 0.500 M KOH? Write reactions that correspond to the following enthalpy changes: a. ΔHof for solid aluminum oxide b. the standard enthalpy of combustion of liquid ethanol [C2H5OH(l)] An isothermal process is one in which the temperatures of the system and surroundings remain constant at all times. With this in mind, what is wrong with the following statement: “For an isothermal expansion of an ideal ...For nitrogen gas the values of Cv and Cp at 25oC are 20.8 J K-1 mol-1 and 29.1 J K-1 mol-1, respectively. When a sample of nitrogen is heated at constant pres-sure, what fraction of the energy is used to increase the ...
Post your question