Absolute Entropy Sº, in moll K1 3. Use the following table and rxn to answer the questions. Standard Heat of Substan...
Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in benzoic acid, pKa 4.19, and is 0.11M in sodium benzoate? 2) Find the %-diss of a buffer if the pKa 7.10 and the pH of the buffer is 7.50. 3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M Na0H. a) What is the equivalence point volume and ½ equivalence...
ANSWER EACH QUESTION AND SHOW WORK 4) Using the accompanying data, calculate the standard entropy changes for the following reactions at 25 °C: MgCo. (s) → MgO (s) + CO2 AS(/K-moll) 65.69 2 6.78 213.6 AS (J/K-mol) 2 CH. () + 70, (g) → 4CO2(g) + 6H20 (1) 172.8 205.0 213.6 69.9 5) Calculate the free energy change for this reaction at 25°C. Is the reaction spontaneous? 2 Ca (s) + 02 (g) + 2 Cao (s) AH = -1269.8...
Thermochemistry Help 6. Enthalpy of Heat of Combustion, AHo Entropy, So 393.5 285.8 -1366.7 5.740 130.6 160.7 69.91 20g) a. Write a separate, balanced chemical equation for the combustion of each of the following: C H2and C,HOH Combustion of C(s): Combustion of H2g Combustion of C,H OHu AH combustionCH,OH (1,- In principle, ethanol can be prepared by the following reaction: Using the reactions you wrote in (a), calculate the standard enthalpy change, Consider the only products to be CO, and/or...
Calculate the standard entropy change for the reaction 2H2(g)+O2(g)?2H2O(l) using the data from the following table: Substance ?H?f (kJ/mol) ?G?f (kJ/mol) S? [J/(K?mol)] H2(g) 0.00 0.00 130.6 O2(g) 0.00 0.00 205.0 H2O(l) -285.8 -237.2 69.90 Express your answer to four significant figures and include the appropriate units. Please show me the steps on how to solve this!!! Thank you!!!
Enter your answer in the provided box. Calculate the standard entropy change for the following reaction at 25°C. S(rhombic) + O2(g) → SO2(g) K.mol 31.88 S(rhombic) 02(g) SO2(g) 205.0 248.5
4. Use the following formation rxn to answer the questions. 1/2 C12(g) + 3/2 F2(g) → CIF3(g) CIF3 can be prepared by the reaction represented by the equation above. For CIF; the standard enthalpy of formation, AH°, is -163.2 kilojoules/mole and the standard free energy of formation, AG°, is - 123.0 kilojoules/mole. a) Calculate the value of the equilibrium constant for the reaction at 298 K. b) Calculate the standard entropy change, AS°, for the above reaction at 298 K...
Entropy/Enthalpy Questions 2. Consider the reaction: 2 BsHo (I)+ 12 O: (8) (a) Use the standard enthalpies of formation found in Appendix B of the textbook to calculate the enthalpy change of the reaction. The standard enthalpy of formation of BsH, () is 73.2 kl/mol. 5 B0, (s) + 9 HiO () s(-1272) 9-235.84)-273.2)-2(0) [-8932.56-146.47 40 78.46 (b) Predict the sign of the entropy change and provide the two reasons likely to have made the biggest impact on the entropy...
please answer 17a,b,c 17. Using values for the standard enthalpies of formation (AHY) and standard molar entropy (AS on the Appendix, calculate the following thermodynamic values for the complete combustion of ethanol: (10 points) C2H5OH(g) + 302(g) → 2CO2(g) + 3H2O(g) a) The standard enthalpy change (AHº) b) The standard entropy change (AS) c) Use values from a) and b) above to calculate AG° at 298K Formula SU/(K-mol 160 TABLE 16.1 Standard Molar Entropies for Some Common Substances at 25...
PLEASE ANSWER ALL 5 QUESTIONS (2 on standard entropy of reaction, 3 on Delta G) AND SHOW ALL WORK! *If you do not anticipate to answer all posted questions in given post, please leave unaswered for someone else to help me with them ALL* Consider the reaction: CaCo3(s) Cao(s)+Co2g) Using standard absolute entropies at 298K, calculate the entropy change for the system when 2.20 moles of CaCOs(s) react at J/K AS system Submit Answer Consider the reaction: 2C2Ho(g)+702)4Co2(g)+ 6H20) Using...
Chapter 1 Thermodynamics Page 16 16. The standard enthalpy of combustion of solid phenol (CH3OH) is -3054 kJ moli' at 298K and its standard molar entropy is 144,0 J K'moll. Calculate the standard Gibbs free energy of formation at 298K. (81,98 kJ mol) 17. Calculate the standard Helmholtz energy of formation of CH2OH(l) at 298K from the standard Gibbs energy of formation, on the assumption that He and O2 are perfect gases. (-160 kJ mol') 18. a. Calculate the heat...