Homework Answers
2 CH3OH ( g ) = 2ch4(g) + o2(g)
a) heat is suplied to the system,so it is endothermic
b) ( 24.0 g ch3oh ) / ( 32.0 g ch3oh / mol ) * ( 252.8 kj / 2 mol ch3oh) = 94.8 KJ
c ) ( 82.1 kj) / ( 252.8 kj / 2 mol ch4) * ( 16.0 g ch4 / mol) = 6.6 g CH4
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7· (12 points) Consider the following reaction 2 CHOH (8)2CHa()+0() AH 2528 k) (a) Is this...
2) From the enthalpies of reaction provided, calculate the AH for the reaction of carbon with hydrogen as shown bel...
2) From the enthalpies of reaction provided, calculate the AH for the reaction of carbon with hydrogen as shown below. Is the reaction exothermic or endothermic? How many grams of C3Hg are produced with an enthalpy change of 209.4 kJ? 3 C(s) + 4 H2(g) - C He(a) moto-non (5+3=2 C3H8(9) + 5 O2(g) 3 CO2(g) + 4 H2O(9) AH = -2043 kJ/mol AH = -393.5 kJ/mol C(s) + Ozon 2 H2(g) + O2th CO2(g) 2 H20(9) AH = -483.6...
4. ( point) For the problem above that does produce products: a. What is oxidized in...
4. ( point) For the problem above that does produce products: a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? 5. (3 points) Consider the following reaction: 2CH,OH(g) à 2CH,(g) +O(g) AH +252.8 kJ a) Calculate the amount of heat transferred when 24.0 g of CH,OH(g) is decomposed by this reaction at constant pressure. b) For a given sample of CH,OH, the enthalpy change during the reaction is 82.1 kJ. How many grams...
Consider the following reaction: 2Na + Cl2(g) → 2NaCl
Consider the following reaction:2Na + Cl2(g) → 2NaCl ΔH = -821.8 kJ(a) Is the reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 5.6 g of Na reacts at constant pressure. (c) How many grams of NaCl are produced during an enthalpy change of 16.5 kJ? (d) How many kilojoules of heat are absorbed when 44.1 g of NaCl is decomposed into Na and Cl2 at constant pressure?
The standard enthalpy change for the following reaction is -415 kJ at 298 K. Zn(s) + Ch(g) → ZnCl2() AH° = -415 k...
The standard enthalpy change for the following reaction is -415 kJ at 298 K. Zn(s) + Ch(g) → ZnCl2() AH° = -415 kJ What is the standard enthalpy change for the reaction at 298 K? ZnCl(s) — Zn(s) + Cl2(g) The standard enthalpy change for the following reaction is -50.6 kJ at 298 K. N2H40 - N2(g) + 2 H2(g) AH° = -50.6 kJ What is the standard enthalpy change for this reaction at 298 K? N2(g) + 2 H2(g)...
How do I solve this? Na(s) + Cl2(9) + 2NaCl(s), AH = -821.8 kJ (a) Is...
How
do I solve this?
Na(s) + Cl2(9) + 2NaCl(s), AH = -821.8 kJ (a) Is this reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 8.0 g of Na(s) reacts according to this reaction at constant pressure. (c) How many grams of NaCl are produced during an enthalpy change of 10.0 kJ? (d) How many kJ of heat are absorbed when 25.0 g of NaCl(s) is decomposed into Na(s) and Cl2(9) at constant pressure?
Consider the following reaction: CO(g) + 2 H2(g) → CH2OH (9) AH = -90.7 kJ Calculate...
Consider the following reaction: CO(g) + 2 H2(g) → CH2OH (9) AH = -90.7 kJ Calculate the amount of heat transferred when 107.3 g of CH2OH is synthesized by the above reaction at constant pressure. Select one: oa. -90.7 kJ ob. 9.732 x 102 kJ O C. 3.037 x 102 kJ O d. -3.037 x 102 kJ o e. 9.732 x 10 kJ Consider the following reaction: CO(g) + 2 H2 (g) → CH3OH (9) AH = -90.7 kJ For...
Determine whether the following processes are endothermic or exothermic: Endo or Exothermic? Sign () of AH?...
Determine whether the following processes are endothermic or exothermic: Endo or Exothermic? Sign () of AH? Reaction or Process H1O)H:0(s) H20) H0(g) CH (g) + 20:(g) Co:(g) + 2H :0( ) + heat N:(g)+O:(g)+ heat 2NO(g) If the enthalpy of H2(g) + I2(g) 2HI(g) is equal to +53 of 2HI(g) H2(g) +I2(g)? Explain. k] what is the enthalpy of the reaction mol'
Consider the following reaction: CH3OH(9) CO(9)+2H (9) AH = +90.7kJ AH = 130 kJ Previous Answers...
Consider the following reaction: CH3OH(9) CO(9)+2H (9) AH = +90.7kJ AH = 130 kJ Previous Answers Correct Part For a given sample of CH,OH the enthalpy change on reaction is 185 kJ How many grams of hydrogen gas are produced? I AED ROO? Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part D What is the value of AH for the reverse of the previous reaction? AED ROO? AH. Submit Previous Answers Request Answer X Incorrect;...
2 pts Question 14 Consider the reaction 2H2(g) + O2(g) → 2H2O(l) AH = -286 kJ...
2 pts Question 14 Consider the reaction 2H2(g) + O2(g) → 2H2O(l) AH = -286 kJ Which of the following is true? The reaction is exothermic The reaction is endothermic The reaction is neutral with respect to energy change Heat is absorbed by the system Information is not enough to tell about the energy change
Consider the following reaction. CH4(g) + 2 O2(g) - CO2(g) + 2 H20(1) AH = -891...
Consider the following reaction. CH4(g) + 2 O2(g) - CO2(g) + 2 H20(1) AH = -891 kJ Calculate the enthalpy change for each of the following cases. (a) 2.00 g methane is burned in excess oxygen. Гk (b) 2.00 x 103 L methane gas at 743 torr and 25°C is burned in excess oxygen.
2) From the enthalpies of reaction provided, calculate the AH for the reaction of carbon with hydrogen as shown below. Is the reaction exothermic or endothermic? How many grams of C3Hg are produced with an enthalpy change of 209.4 kJ? 3 C(s) + 4 H2(g) - C He(a) moto-non (5+3=2 C3H8(9) + 5 O2(g) 3 CO2(g) + 4 H2O(9) AH = -2043 kJ/mol AH = -393.5 kJ/mol C(s) + Ozon 2 H2(g) + O2th CO2(g) 2 H20(9) AH = -483.6...
4. ( point) For the problem above that does produce products: a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? 5. (3 points) Consider the following reaction: 2CH,OH(g) à 2CH,(g) +O(g) AH +252.8 kJ a) Calculate the amount of heat transferred when 24.0 g of CH,OH(g) is decomposed by this reaction at constant pressure. b) For a given sample of CH,OH, the enthalpy change during the reaction is 82.1 kJ. How many grams...
The standard enthalpy change for the following reaction is -415 kJ at 298 K. Zn(s) + Ch(g) → ZnCl2() AH° = -415 kJ What is the standard enthalpy change for the reaction at 298 K? ZnCl(s) — Zn(s) + Cl2(g) The standard enthalpy change for the following reaction is -50.6 kJ at 298 K. N2H40 - N2(g) + 2 H2(g) AH° = -50.6 kJ What is the standard enthalpy change for this reaction at 298 K? N2(g) + 2 H2(g)...
How
do I solve this?
Na(s) + Cl2(9) + 2NaCl(s), AH = -821.8 kJ (a) Is this reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 8.0 g of Na(s) reacts according to this reaction at constant pressure. (c) How many grams of NaCl are produced during an enthalpy change of 10.0 kJ? (d) How many kJ of heat are absorbed when 25.0 g of NaCl(s) is decomposed into Na(s) and Cl2(9) at constant pressure?
Consider the following reaction: CO(g) + 2 H2(g) → CH2OH (9) AH = -90.7 kJ Calculate the amount of heat transferred when 107.3 g of CH2OH is synthesized by the above reaction at constant pressure. Select one: oa. -90.7 kJ ob. 9.732 x 102 kJ O C. 3.037 x 102 kJ O d. -3.037 x 102 kJ o e. 9.732 x 10 kJ Consider the following reaction: CO(g) + 2 H2 (g) → CH3OH (9) AH = -90.7 kJ For...
Determine whether the following processes are endothermic or exothermic: Endo or Exothermic? Sign () of AH? Reaction or Process H1O)H:0(s) H20) H0(g) CH (g) + 20:(g) Co:(g) + 2H :0( ) + heat N:(g)+O:(g)+ heat 2NO(g) If the enthalpy of H2(g) + I2(g) 2HI(g) is equal to +53 of 2HI(g) H2(g) +I2(g)? Explain. k] what is the enthalpy of the reaction mol'
Consider the following reaction: CH3OH(9) CO(9)+2H (9) AH = +90.7kJ AH = 130 kJ Previous Answers Correct Part For a given sample of CH,OH the enthalpy change on reaction is 185 kJ How many grams of hydrogen gas are produced? I AED ROO? Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part D What is the value of AH for the reverse of the previous reaction? AED ROO? AH. Submit Previous Answers Request Answer X Incorrect;...
2 pts Question 14 Consider the reaction 2H2(g) + O2(g) → 2H2O(l) AH = -286 kJ Which of the following is true? The reaction is exothermic The reaction is endothermic The reaction is neutral with respect to energy change Heat is absorbed by the system Information is not enough to tell about the energy change
Consider the following reaction. CH4(g) + 2 O2(g) - CO2(g) + 2 H20(1) AH = -891 kJ Calculate the enthalpy change for each of the following cases. (a) 2.00 g methane is burned in excess oxygen. Гk (b) 2.00 x 103 L methane gas at 743 torr and 25°C is burned in excess oxygen.
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