Homework Answers
14. delta Hrxn= (product) - (reactant)
= [(4* 91.3) + (6 *-241.8)] - [ 4* -45.9] kJ/mol
= -902 kJ/mol (option D)
15. option E as the pair of electrons in 2s orbital have same spin and hence all the four same quantum number..which is not possible. So this configuration does not obey pauli exclusion principle.
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14- Calculate AH-m for the following reaction: 4 NHs (g) 솨,e,s ? + 5 (g) → 4 NO (g) + 6 H2O (g) Given the following ΔΗ7 values: NHs (g)-45.9 kJ/mol NO (g) +91.3 kJ/mol H20 (g)-241.8 kJ/mol A) 16...
(NO(g)) = 20. Determine the enthalpy for the following reaction, given AH (NH3(g)) = -46.1 kJ/mol, AH +90.3 kJ/mol, and...
(NO(g)) = 20. Determine the enthalpy for the following reaction, given AH (NH3(g)) = -46.1 kJ/mol, AH +90.3 kJ/mol, and AH (H2O(g)) = -241.8 kJ/mol. 4NH3(g) + 502(g) → 4NO(g) + 6H2O(g) AH x = ? kJ a. -1274 kJ/mol d. -905.2 kJ/mol b. -1,996 kJ/mol e. -105.4 kJ/mol c. +1,274 kJ/mol
help help help pls! 17. The value of AH° for the reaction below is -790 kJ/mol....
help help help pls!
17. The value of AH° for the reaction below is -790 kJ/mol. What is the enthalpy change accompanying when 0.95 g of S is completely reacted? 2S (s)302 (g) -2SO3 (g) 18. What is the enthalpy of the following reaction: 4 HCI(g) + O2(g) Given the following thermochemical equations: H2(g)+Cla(g)-2 HCI(g) 2 H2(s)O2(g)- 2 H20(g) 2 Cl2 +2 H2O (g)? AH -185 kJ AH-483.7 kJ
5. Using standard heats of formation, calculate AH for 4 FeO (s) + O2(g) → 2...
5. Using standard heats of formation, calculate AH for 4 FeO (s) + O2(g) → 2 Fe2O3 (s) AH1 of FeO (s) = -272.0 kJ/mol AHºf of Fe2O3 (s) = -825.5 kJ/mol 3. Given 3 C (s) + 4 H2(g) → C3H8 (9) AH = -103.85 kJ/mol C(s) + O2(g) + CO2(g) AH = -393.5 kJ/mol H2 (g) + 12 O2(g) → H2O (1) AH = -285.8 kJ/mol find AH for C3H8 (g) + 5 O2(g) → 3 CO2 (g)...
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (8) N20 (g) + 2 H20...
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (8) N20 (g) + 2 H20 (g) Calculate AGº for the reaction. Substance Sº (J/mol K) NH4NO3 (s) 151 N20 (8) 220 H2O (9) 183
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (s) N20 (g) + 2 H2O...
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (s) N20 (g) + 2 H2O (g) Calculate AGº for the reaction. Substance Sº (J/mol K) NH4NO3 (s) 151 N20 (g) 220 H2O (g) 183
2. Given the following heats of formation, calculate AH for the reaction 2 CO(g) + 5...
2. Given the following heats of formation, calculate AH for the reaction 2 CO(g) + 5 H2(g) → C2H6 (g) + 2 H2O(g) Compound AH°F (kJ/mol) Compound AH°F (kJ/mol) 52.28 C₂H6 (8) -84.68 C2H4 (8) -393.5 CO2(g) -241.8 H2O(g) -285.9 CO(g) -110.5 H2O(1)
Ch. 5, 6 A What is AH rxn for the following reaction? SIO2 (s) + 4HCl(g)...
Ch. 5, 6 A What is AH rxn for the following reaction? SIO2 (s) + 4HCl(g) → SiCl4(g) + 2H20(9) Substance AH {(kJ/mol) SIO2(5) 859.3 SiCl4(9) 662.8 HCl(9) -92.3 H20(9) -241.8 Multiple Choice о -1856.2 kJ/mol о -13726 kJ/mol О -470 kJ/mol
Calculate the AH for the following reaction: TICI4 (g) + 2 H20 (g) →TiO2 (s) +...
Calculate the AH for the following reaction: TICI4 (g) + 2 H20 (g) →TiO2 (s) + 4 HCI (8) compound AH+ (kJ/mol) TICIA -763 H20 -242 -945 HCI -92 TIO2 -66 kJ/mol +32 kJ/mol 0 -32 kJ/mol +66 kJ/mol -2.0 x 103 kJ/mol Question 27
AH-116.4 kJ/mol 4. Consider the following reaction: NH.NO, (s) N20 (8) + 2 H20 (g) Calculate...
AH-116.4 kJ/mol 4. Consider the following reaction: NH.NO, (s) N20 (8) + 2 H20 (g) Calculate AGⓇ for the reaction. Substance S” (J/mol K) NH.NO, (3) 151 N:0 (8) 220 H:0 (9) 183 5. The first step in the commercial production of titanium metal is the reaction of Tio: with chlorine an graphite: TiO2 (s) + 2 Cl: (g) + 2C (5) Tici: (1) + 2 CO(g) Calculate AGº for the reaction. Substance AG? (kJ/mol Substance AG® (kJ/mol) C(s) TiCl...
6. Given H2(g) + 22 O2(g) → H2O(1), AH° = -286 kJ/mol, Determine the standard enthalpy...
6. Given H2(g) + 22 O2(g) → H2O(1), AH° = -286 kJ/mol, Determine the standard enthalpy change for the reaction 2H2O(l) → 2H2(g) + O2(g) (2 pt)
(NO(g)) = 20. Determine the enthalpy for the following reaction, given AH (NH3(g)) = -46.1 kJ/mol, AH +90.3 kJ/mol, and AH (H2O(g)) = -241.8 kJ/mol. 4NH3(g) + 502(g) → 4NO(g) + 6H2O(g) AH x = ? kJ a. -1274 kJ/mol d. -905.2 kJ/mol b. -1,996 kJ/mol e. -105.4 kJ/mol c. +1,274 kJ/mol
help help help pls!
17. The value of AH° for the reaction below is -790 kJ/mol. What is the enthalpy change accompanying when 0.95 g of S is completely reacted? 2S (s)302 (g) -2SO3 (g) 18. What is the enthalpy of the following reaction: 4 HCI(g) + O2(g) Given the following thermochemical equations: H2(g)+Cla(g)-2 HCI(g) 2 H2(s)O2(g)- 2 H20(g) 2 Cl2 +2 H2O (g)? AH -185 kJ AH-483.7 kJ
5. Using standard heats of formation, calculate AH for 4 FeO (s) + O2(g) → 2 Fe2O3 (s) AH1 of FeO (s) = -272.0 kJ/mol AHºf of Fe2O3 (s) = -825.5 kJ/mol 3. Given 3 C (s) + 4 H2(g) → C3H8 (9) AH = -103.85 kJ/mol C(s) + O2(g) + CO2(g) AH = -393.5 kJ/mol H2 (g) + 12 O2(g) → H2O (1) AH = -285.8 kJ/mol find AH for C3H8 (g) + 5 O2(g) → 3 CO2 (g)...
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (8) N20 (g) + 2 H20 (g) Calculate AGº for the reaction. Substance Sº (J/mol K) NH4NO3 (s) 151 N20 (8) 220 H2O (9) 183
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (s) N20 (g) + 2 H2O (g) Calculate AGº for the reaction. Substance Sº (J/mol K) NH4NO3 (s) 151 N20 (g) 220 H2O (g) 183
2. Given the following heats of formation, calculate AH for the reaction 2 CO(g) + 5 H2(g) → C2H6 (g) + 2 H2O(g) Compound AH°F (kJ/mol) Compound AH°F (kJ/mol) 52.28 C₂H6 (8) -84.68 C2H4 (8) -393.5 CO2(g) -241.8 H2O(g) -285.9 CO(g) -110.5 H2O(1)
Ch. 5, 6 A What is AH rxn for the following reaction? SIO2 (s) + 4HCl(g) → SiCl4(g) + 2H20(9) Substance AH {(kJ/mol) SIO2(5) 859.3 SiCl4(9) 662.8 HCl(9) -92.3 H20(9) -241.8 Multiple Choice о -1856.2 kJ/mol о -13726 kJ/mol О -470 kJ/mol
Calculate the AH for the following reaction: TICI4 (g) + 2 H20 (g) →TiO2 (s) + 4 HCI (8) compound AH+ (kJ/mol) TICIA -763 H20 -242 -945 HCI -92 TIO2 -66 kJ/mol +32 kJ/mol 0 -32 kJ/mol +66 kJ/mol -2.0 x 103 kJ/mol Question 27
AH-116.4 kJ/mol 4. Consider the following reaction: NH.NO, (s) N20 (8) + 2 H20 (g) Calculate AGⓇ for the reaction. Substance S” (J/mol K) NH.NO, (3) 151 N:0 (8) 220 H:0 (9) 183 5. The first step in the commercial production of titanium metal is the reaction of Tio: with chlorine an graphite: TiO2 (s) + 2 Cl: (g) + 2C (5) Tici: (1) + 2 CO(g) Calculate AGº for the reaction. Substance AG? (kJ/mol Substance AG® (kJ/mol) C(s) TiCl...
6. Given H2(g) + 22 O2(g) → H2O(1), AH° = -286 kJ/mol, Determine the standard enthalpy change for the reaction 2H2O(l) → 2H2(g) + O2(g) (2 pt)
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