Question

Asked Mar 12, 2019

4.8) Calculate the values of ΔU, ΔH, and ΔS for the following process:

1 mole of liquid water at 25 C and 1 atm ➡️ 1 mole of steam at 100 C and 1 atm

The molar heat of vaporization of water at 373 K is 40.79 kJ mol^{-1}, and molar heat capacity of water is 75.3 J K^{-1} mol^{-1}. Assume molar heat capacity to be temperature independent and ideal-gas behavior.

Step 1

In isobaric process, ΔH = q, the given process also an isobaric process so the molar heat of vaporization equal to enthalpy change,

Step 2

Internal energy change of 1 mole of liquid water to 1 mole of steam is calculated by substituting the values of R and T (373K) give ΔH (40.7 KJ mol^{-1}) and Δn (1) in below equation.

Step 3

Heat change of given process is equal to molar heat of vaporization of wate...

Tagged in

Q: Hello, I am trying to balance a tricky (skeleton) reaction using the half reaction method: CrI3 (...

A: Step 1 : write the unbalanced chemical equation:Step2: identify and write all redox couple in react...

Q: I don't know what those signals indicate on the MS spectrum and I don't know the mechanism for the r...

A: Hey, since there are multiple questions posted, we will answer one question. If you want any specifi...

Q: Can you please help me determine the σ framework and π MO Energy Diagram for this molecule?

A: The molecular orbitals are formed due to the mixing of the atomic orbitals of each of the atoms that...

Q: The density of a solution that is 30.0 % H C l O3 is 1.167 g/mL. Calculate the molarity of the H C l...

A: Given –The given solution is 30% HClO3Density of this solution = 1.167 g/mLMolar mass of HClO3 = 84....

Q: Calculate the pH of 1M solution of acedic acid (pKa = 4.76)?

A: The pH of the acetic acid solution can be calculated using the formula shown in belowpKa = -log(10)[...

Q: Hello, I am looking for a step by step method for balancing more complicated chemical equations beca...

A: A chemical equation is balanced when the number of atoms of each element and the total charge on re...

Q: Calculate the mass of urea that should be dissolved in 225 g of water at 35 degrees celsius to produ...

A: Colligative properties are those properties which depend only on the moles of solute.Addition of a n...

Q: what mass of insulin must be dissolved in 100.0mL of water to produce a solution with an oosmotic pr...

A: The osmotic pressure is one of the colligative properties of solutions which has influence on solute...

Q: How many sigma bonds and pi bonds are in acetonitrile? (choose one) 1. 4 sigma, 2 pi 2. 5 sigma...

A: The structure of acetonitrile is