What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?
To determine the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K, you need to know the molar entropy of ammonia and apply the ideal gas law.
1. Start by finding the molar entropy of ammonia at 298 K and 1 bar. You can find this value in a thermodynamics reference book or by using online resources.
2. Convert the pressure from 2.8 bar to 1 bar. Divide 2.8 bar by 1 bar to get the conversion factor.
3. Multiply the molar entropy of ammonia at 1 bar by the conversion factor to get the molar entropy at 2.8 bar.
4. Finally, multiply the molar entropy at 2.8 bar by the number of moles (1.9 mol) to obtain the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K.