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Calculating AS for a Reaction When wine is exposed to air in the presence of certain...
3. You are given the following standard enthalpies of formation at 25°C. HF (aq) -320.1 kJ/mol...
3. You are given the following standard enthalpies of formation at 25°C. HF (aq) -320.1 kJ/mol OH(aq) -230.0 kJ/mol F (aq) -332.6 kJ/mol H:0 (1) -285.8 kJ/mol a. Calculate the standard enthalpy of neutralization of HF (aq) HF (aq) + OH(aq) F (aq) + H20 (1) b. Using the value of -56.2 kJ/mol as the standard enthalpy change for the reaction H' (aq) + OH(aq) - H20 (1) calculate the standard enthalpy change for the reaction HF (aq) - H(aq)...
p1 P1. Write a balanced chemical equation for each combustion reaction. Assume that combustion is complete. The fo...
p1
P1. Write a balanced chemical equation for each combustion reaction. Assume that combustion is complete. The formulas and the line-bond structures for the compounds are given on the previous page. Write your equations so that liquid water is one of the products. Ethanol: Ethyl acetate: mm For onoh fuol'c combuetion reaction fill in the tables belo for the number of each AHr = [(4 x 413 kJ/mol for the C-H bonds in one mole of methane)+ (2 x 495...
O THERMOCHEMISTRY Calculating a molar heat of reaction from formation enth... Using the table of standard...
O THERMOCHEMISTRY Calculating a molar heat of reaction from formation enth... Using the table of standard formation enthalpies that you'll find under the ALEKS Data tab, calculate the reaction enthalpy of this reaction under standard conditions: CH,(0)+2 H2(0) C,H) Round your answer to the nearest kJ. ? X
please answer 17a,b,c 17. Using values for the standard enthalpies of formation (AHY) and standard molar...
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...
4. Calculate the energy change for the following reaction, using the standard enthalpies of formation provided....
4. Calculate the energy change for the following reaction, using the standard enthalpies of formation provided. SO2Cl2 (I)+2 H2O (I)2 HCI (g) + H,SO4 ) Substance AH (/mol) SO-ClO H2O0) HO(g) НСКО НС 9) H2SO 0) H-SO (aq) -394.1 -285.8 -241.8 92.3 -167.2 814.0 -909.3 If 25.0 kJ of heat energy is added to 50.0 g of water initially at 25°C, what will be the final temperature of the water? The specific heat of water is 4.18 J g1 °C
Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene...
Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C, AH" (C02(9)) = -393.5 kJ/mol, AH®:(H,0(I) = -285.8 kJ/mol Select one: a. - 4390 kJ/mol b.-1044 kJ/mol c. -8681 kJ/mol d. +99 kJ/mol O e. +637 kJ/mol The heat of solution...
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9...
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9 kJ/mol Cas) + 1/20 (g) - Cao(s) AH,º=-635.1 kJ/mol Cal(s) + H200 - Ca(OH) (9) AH,=-65.2 kJ/mol The standard enthalpies of combustion of graphite and C2H2(g) are -393.51 and -1299.58 kJ/mol, respectively. Calculate the standard enthalpy of formation of CaCz(s) at 25°C. Aside on enthalpy of combustion: Please note that the standard enthalpy of combustion will form H200, not H:09), if the substance includes...
1. 2. * Incorrect. What is the heat of formation of elements in their standard states?...
1.
2.
* Incorrect. What is the heat of formation of elements in their standard states? Did you use the correct equation of products minus reactants? The amino acid glycine, C2H5NO2, is one of the compounds used by the body to make proteins. The equation for its combustion is 4C2H5NO2(s) + 902(g) + 8C02(g) +10H20(1) +2N2(0) For each mole of glycine that burns, 973.49 kJ of heat is liberated. Use this information, plus values of AHF for the products of...
cace). The Ka for acetic acid. HCHO(ag) is 1.8 X 10 at 25°C Write the chemical...
cace). The Ka for acetic acid. HCHO(ag) is 1.8 X 10 at 25°C Write the chemical reaction that chemical reaction that describes the dissociation of acetic acid. C2 1 2 0 2 (aq) + H3 1 C2 H 3 O 2 caq) + H 2 O (1) Given the following standard enthalpies of formation Substance AH® (kJ/mol) (T= 25°C) HC2H3O2(aq) -485.76 C2H302 (aq) -486.01 H(aq) Calculate the K, at 35 °C. Qualitatively, how would expect the pH of a solution...
c) The standard enthalpies of formation and molar entropies of phosgene, carbon monoxide, and chlorine are...
c) The standard enthalpies of formation and molar entropies of phosgene, carbon monoxide, and chlorine are COCl2(g): ΔfH° = -220.08 kJ mol-1; S° = 283.8 J mol-1 K-1 CO(g): ΔfH° = -110.53 kJ mol-1; S° = 197.66 J mol-1 K-1 Cl2(g): ΔfH° = 0 kJ mol-1; S° = 223.08 J mol-1 K-1 i) Determine the reaction Gibbs energy for the decomposition of phosgene at 298 K. Is this reaction spontaneous at this temperature? [25 marks] ii) At what temperature does...
3. You are given the following standard enthalpies of formation at 25°C. HF (aq) -320.1 kJ/mol OH(aq) -230.0 kJ/mol F (aq) -332.6 kJ/mol H:0 (1) -285.8 kJ/mol a. Calculate the standard enthalpy of neutralization of HF (aq) HF (aq) + OH(aq) F (aq) + H20 (1) b. Using the value of -56.2 kJ/mol as the standard enthalpy change for the reaction H' (aq) + OH(aq) - H20 (1) calculate the standard enthalpy change for the reaction HF (aq) - H(aq)...
p1
P1. Write a balanced chemical equation for each combustion reaction. Assume that combustion is complete. The formulas and the line-bond structures for the compounds are given on the previous page. Write your equations so that liquid water is one of the products. Ethanol: Ethyl acetate: mm For onoh fuol'c combuetion reaction fill in the tables belo for the number of each AHr = [(4 x 413 kJ/mol for the C-H bonds in one mole of methane)+ (2 x 495...
O THERMOCHEMISTRY Calculating a molar heat of reaction from formation enth... Using the table of standard formation enthalpies that you'll find under the ALEKS Data tab, calculate the reaction enthalpy of this reaction under standard conditions: CH,(0)+2 H2(0) C,H) Round your answer to the nearest kJ. ? X
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...
4. Calculate the energy change for the following reaction, using the standard enthalpies of formation provided. SO2Cl2 (I)+2 H2O (I)2 HCI (g) + H,SO4 ) Substance AH (/mol) SO-ClO H2O0) HO(g) НСКО НС 9) H2SO 0) H-SO (aq) -394.1 -285.8 -241.8 92.3 -167.2 814.0 -909.3 If 25.0 kJ of heat energy is added to 50.0 g of water initially at 25°C, what will be the final temperature of the water? The specific heat of water is 4.18 J g1 °C
Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C, AH" (C02(9)) = -393.5 kJ/mol, AH®:(H,0(I) = -285.8 kJ/mol Select one: a. - 4390 kJ/mol b.-1044 kJ/mol c. -8681 kJ/mol d. +99 kJ/mol O e. +637 kJ/mol The heat of solution...
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9 kJ/mol Cas) + 1/20 (g) - Cao(s) AH,º=-635.1 kJ/mol Cal(s) + H200 - Ca(OH) (9) AH,=-65.2 kJ/mol The standard enthalpies of combustion of graphite and C2H2(g) are -393.51 and -1299.58 kJ/mol, respectively. Calculate the standard enthalpy of formation of CaCz(s) at 25°C. Aside on enthalpy of combustion: Please note that the standard enthalpy of combustion will form H200, not H:09), if the substance includes...
1.
2.
* Incorrect. What is the heat of formation of elements in their standard states? Did you use the correct equation of products minus reactants? The amino acid glycine, C2H5NO2, is one of the compounds used by the body to make proteins. The equation for its combustion is 4C2H5NO2(s) + 902(g) + 8C02(g) +10H20(1) +2N2(0) For each mole of glycine that burns, 973.49 kJ of heat is liberated. Use this information, plus values of AHF for the products of...
cace). The Ka for acetic acid. HCHO(ag) is 1.8 X 10 at 25°C Write the chemical reaction that chemical reaction that describes the dissociation of acetic acid. C2 1 2 0 2 (aq) + H3 1 C2 H 3 O 2 caq) + H 2 O (1) Given the following standard enthalpies of formation Substance AH® (kJ/mol) (T= 25°C) HC2H3O2(aq) -485.76 C2H302 (aq) -486.01 H(aq) Calculate the K, at 35 °C. Qualitatively, how would expect the pH of a solution...
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