The entropy of system increases when liquid transform to gas state. Entropy is the measurement of disordernessat micro state level of molecule.
What properties of a system change when it transforms from liquid to gas at constant pressure...
1)The Gibbs energy of liquid water is more sensitive to the change of temperature at constant pressure than Ice I. Briefly explain. 2) The Gibbs energy of nitrogen gas is more sensitive to the change of pressure at constant temperature than liquid nitrogen. Briefly explain.
The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 2.80 atm. What is the new volume (in mL) assuming the moles of gas and temperature are held constant? If the temperature of a 15.5 mL sample of Nz gas is increased from 25.0 °C to 75.0 °C as its pressure remains constant, what will be its new volume in milliliters?
When the pressure P is constant at 1 atm, the melting point of Br_2 is T_m = 265.95 K and its boiling point is T_b = 331.85 K. Br_2 is therefore liquid at 298 K and 1 atm but it also has a finite vapor pressure hence the property of both liquid and gas Br_2 can be obtained at at 298 K and 1 atm. Using a DeHoff equation and the thermodynamic table on D2L calculate the absolute molar entropy...
Natural gas is cooled at a constant temperature from a superheated vapor to a compressed liquid. Sketch this process on p-v coordinates, with pressure as the y-axis.
When a system of acetone undergoes a phase change from liquid to vapor, the entropy change (ΔS) for the system is 95 J/K and it requires 31.3 kJ of energy to be transferred into the system from the surroundings. (CH3)2CO (l) → (CH3)2CO (g) ΔH = 31.3kJ a. Calculate the overall entropy change (ΔSuniverse) for this process at 65.0°C. b. Briefly discuss whether or not this process would be spontaneous or nonspontaneous at this temperature.
An ideal gas is compressed at a constant pressure of 0.80 atm from 19.0 L to 12.0 L. The initial temperature of the gas is 27°C. 1 atm (atmosphere) = 1.013 ~ 10% Pa, 1 L (liter) = 10² m². What is the final temperature of the gas in °C? Hint: pV / T = nR, and n does not change, so you can use piVi / T1 = p2V2 / T2. Do not forget to convert the unit of...
1. A particular gas exerts a pressure of 689 mmHg. What is this pressure in units of bar? 2. A particular gas exerts a pressure of 731 mmHg. What is this pressure in units of atmospheres? 3.A flexible vessel contains 78.00 L of gas at a pressure of 1.50 atm. Under conditions of constant temperature and moles of gas, what is the pressure of the gas when the volume of the vessel is tripled? 4.A flexible vessel is filled to...
4. Suppose we change the pressure of an ideal gas at constant temperature. How is the corresponding AG related to its AS for the same process? For example, are they proportional to each other, and - if so - what is the proportionality constant?
A gas expands against a constant pressure of 1.25 atm from 12.5 L to 18.4 L. During this process, there is a heat gain by the system of 47.8J. Calculate the energy change of the system.
Answer and reason please! 7. When a liquid is in dynamic equilibrium with its vapor in a closed container: (a) the rate at which molecules from the liquid phase enter the gas phase exactly equals the rate at which molecules from the gas phase pass into the liquid phase. (b) a change in temperature will not change the pressure in the container (c) the amount of gas in the container must exactly equal the amount of liquid. (d) molecules cannot...