Principles of Chemistry II Chapter 16: Thermodynamics Name: Date: ANSWER THE FOL

Question

Principles of Chemistry II Chapter 16: Thermodynamics Name: Date: ANSWER THE FOLLOWING QUESTIONS. PLEASE SHOW ALL OF YOUR WORK FOR CALCULATIONS. 1. Arrange Fe(s), FeClus), FeCl,(aq), and K.[Fe(Caq) in the order of increasing entropy. 2. Calculate the standard free energy (AG) for the formation of one mole of water from its elements if knowing AG for 2H 0(g) 2H:(g)+0(g) is 458 kJ. The normal freezing point of ammonia is-78°C Predict the signs of AH. ?. and SG for ammonia when it freezes: NH()NHs(s) (a) at-78°C and 1 atm (b) at-80°C and I atm 3. 4. The reaction 4Al(s) +30(g)- 2A 0(s) (a) What are the signs of ?11. AS, and AG for the reaction? (b) What would be the relation between spontaneity and temperature for the reaction? 250 J/mol K. Is the reaction spontaneous under standard A reaction has ?/p= 100 kJ/mol and AS? conditions? If not, under what temperature conditions will it become spontaneous? 5. 6. At room temperature, the equilibrium constant (K.) for the self-ionization of water is 1.00 x 10-4 Using this information, calculate the standard free energy change for the aqueous reaction of hydrogen ion with hydroxide ion to produce water.

Explanation / Answer

Ans 1 :

Entropy is the degree of disorderness or randomness of the system.

Larger the molecules , larger disturbances it will create , and hence higher is the entropy.

So here , the order of increasing entropy is given as :

Fe (s) < FeCl3 (s) < FeCl3 (aq) < K4[Fe(CN)6] (aq)

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.