Define how the enthalpy and entropy

Assignment Help Chemistry

Reference no: EM13517931

When solid ammonium chloride, NH4Cl, is added to excess water, a solution forms and the temperature of the system decreases. In a certain experiment, 0.10 mole of NH4Cl is added to a liter of water in an open glass beaker at 298 K. All the salt dissolves in water and there is a decrease in temperature.

1. Explain how the enthalpy, entropy, and free energy of this system change as the dissolving process proceeds.

2. Of the three parameters, ÄS, ÄH, and ÄG, specified in part 1, which has a sign different from the other two? Explain.

3. If this process were carried out in a plastic foam cup rather than a glass beaker, how would the magnitude of the temperature change of the solution be affected? How would the apparent heat of solution be affected? Explain.

4. How is sign and magnitude of the free energy change for this dissolving process affected by an increase in temperature? Explain.

Reference no: EM13517931

Questions Cloud

Describe the alternative means used for assessing causality : Analyze this article using Hill's guidelines. Then respond to the questions: Does the article use Hills guidelines to determine causality?

Recently introduced product has a positive trend in sales : Recently introduced product has a positive trend in sales.

Evaluate the minimum voltage required to produce 1 mole : (a) Calculate the minimum voltage required to produce 1 mole of aluminum at this temperature. (b) If the actual voltage applied is exactly two times the ideal value, calculate the energy required to produce 2.33 kg of the metal.

What would the intensity be at mercury : Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1400 W/m2. What would the intensity be at Mercury

Define how the enthalpy and entropy : Explain how the enthalpy, entropy, and free energy of this system change as the dissolving process proceeds. Of the three parameters, ÄS, ÄH, and ÄG, specified in part 1, which has a sign different from the other two. Explain.

Determine the cpi for a couple of months : Determine the CPI for a couple of months and create a PowerPoint to explain the information - Prepare several slides in the PowerPoint-style that present and explain this information as it relates to inflation in a clear manner.

Responsibility in a global marketplace : Responsibility in a Global Marketplace

Define the absorbance at 510 nm for the solution : A sample of 0.50 g of anhydrous CoCl2(subscript) is dissolved in 25.0 mL of water. Predict the absorbance at 510 nm for this solution, determining using the procedure described in this experiment.

The situational leadership mode : Supervisor take a training seminar on the Situational Leadership mode

User Account

All Pages