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19.65 pts.) At 79.00°F the enthalpy of a reaction was found to be +342.8 KJ/mole and...
19. (5 pts.) At 79.00°F the enthalpy of a reaction was found to be +342.8 KJ/mole and its entropy change was +395.0 J/mole*K. The value of the Gibb's free energy is: (a) +341.0 KJ/mole (b) -461.0 KJ/mole (c) -341.0 KJ/mole (d) +224.6 KJ/mole
18. (5 pts.) A 155.0 mL portion of aqueous phosphoric acid solution was completely neutralized by 45.38 grams of Lithium hydroxide. The chemical equation is: 3 LiQH (s) + H3PO4 (ag) → Li3PO4 (s) + 3 H2O (1) The concentration of the phosphoric acid, in molarity, is: (a) 4.075 M (bude bill M (c) 11.40 M (d) 3.942 M 19.6.5 pts.) At 79.00°F the enthalpy of a reaction was found to be +342.8 KJ/mole and its entropy change was +395.0...
PLEASE ANSWER BOTH QUESTIONS PLEASE ! 19. (5 pts.) At 79.00°F the enthalpy of a reaction was found to be +342.8 KJ/mole and its entropy change was +395.0 J/mole*K. The value of the Gibb's free energy is: (a) +341.0 KJ/mole (b)_-461.0 KJ/mole (C) -341.0 KJ/mole (d) +224.6 KJ/mole 20. (5 pts.) The reaction between nitric oxide (NO) and chlorine (Cl2) to form nitrosyl chloride (NOCI) was found to occur as an elementary reaction as follows: 2 NO (g) + Cl2...
kJ/mole) The standard enthalpy of combustion of solid urea (NH2 (C-O) (C=O)NH2 ) is -632 kJ/mole under standard conditions. Its standard molar entropy is 104.60 J/K mol. Calculate the Gibbs energy of formation of urea at 298K.(ANS: -663 kJ/mol) 4.
Question 17 The remaining Points out of 100 g What is the change in enthalpy (kJ) for a given reaction? The change in Gibb's free energy for the reaction is 34.2 kJ, and the change in entropy is -197.3 J/K at 97.5 °C. Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response Answer: Check
physical chemistry 2. The bond dissociation energy of oxygen gas is 495 kJ/mole, while the enthalpy of formation of ozone gas (O3(g))is 142.3 kJ/mole. For the reaction: NO +O3(g) NO2(g) + O2(g) it is found that AH = -198.9 kJ/mole, Determine the enthalpy change for the reaction: NO(g) + O() NO2(8)
The molar enthalpy of fusion of solid bismuth is 11.0 kJ mol-1, and the molar entropy of fusion is 20.2 J K-1 mol-1. (a) Calculate the Gibbs free energy change for the melting of 1.00 mol of bismuth at 575 K. kJ (b) Calculate the Gibbs free energy change for the conversion of 5.12 mol of solid bismuth to liquid bismuth at 575 K. kJ (c) Will bismuth melt spontaneously at 575 K? (d) At what temperature are solid and...
the enthalpy of vaporization for a substance is 14.2 kJ mole. The vapor pressure was found to be 88.5 mmHg at 201.2 K. What is the vapor pressure at 301.2 K?
What is the value for the standard change in Gibbs free energy (in kJ), when the standard change in enthalpy is 284.6 kJ and the standard change in entropy is 189.89 J/K at 25oC?
What is the value for the standard change in Gibbs free energy (in kJ), when the standard change in enthalpy is (-395.2) kJ and the standard change in entropy is (-256.27) J/K at 25oC?