Lets number the reaction as 0, 1, 2 from top to bottom
required reaction should be written in terms of other
reaction
This is Hess Law
required reaction can be written as:
reaction 0 = +1 * (reaction 1) -2 * (reaction 2)
So, ΔHo rxn for required reaction will be:
ΔHo rxn = +1 * ΔHo rxn(reaction 1) -2 * ΔHo rxn(reaction 2)
= +1 * (-790.0) -2 * (-297.0)
= -196 KJ
Answer: -196
help Using the Hess' law to calculate the enthalpy (kJ) of the reaction of the following...
QUESTION 7 Calculate the enthalpy (AH) for the following equation: 2S(s) + 302(g) +2503(g) from the data shown below. S(s) + O2(g) → SO2(8) AH = -297 kJ 2503(8) ► 2802(g) + O2(8) [see module 9] AH = 198 kJ 0-99 kJ O-693 kJ O-396 kW O -792 KW -17
Imported From Sa... 4. Use Hess' Law to calculate the enthalpy change (AHY) for this reaction: (12 pts.) 6C) + 6H21 309) CH120) using the following equations: A. Cw+ O2(g) → CO2(0) B. Hag) + 1/2O2(g) → H2O(g) C. CoH12O6 + 602(0)+ 6CO2(g) + 6H2O D. H2O → H2O(g) AH'= -393.5 kJ SH-241.8kJ AH = -2803.0 kJ AH = +40.71 kJ Why is this change in enthalpy given the term AHY? (3 pts.)
4. Use Hess' Law to calculate the enthalpy change (AHºr) for this reaction: (12 pts.) 6C(s) + 6H2(g) + 302(g) → C6H12O6(s) using the following equations: A. C(s) + O2(g) → CO2(g) B. H2(g) + 1/2O2(g) → H2O(g) C. C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O)- D. H20m) → H2O(g) AH°= -393.5 kJ AH°= -241.8kJ AH°= -2803.0 kJ AH°= +40.7 kJ C 6111260) At = AHT (66 tn 4) AH3= DH, + A M₂ A4 = A Hz - H₂...
The value of AH° for the reaction below is -790 kJ. The enthalpy change accompanying the reaction of 0.95 g of Sis KJ. 25 (s) + 302 (9) ► 2503 (9) Select one: a. 12 b. -12 C.-790 d. 23 .-23
Using Hess's Law, determine the enthalpy change of the following reaction. CS2(1) + 3 O2(g) --> CO2(g) + 2 SO2(g) C(s) + O2(g) --> CO2(g) AH = -393.5 kJ/mol S(s) + O2(g) --> SO2(g) AH = -296.8 kJ/mol C(s) + 25(s) --> CS2(8) AH = +87.9 kJ/mol -899.2 kJ O-778.2 kJ -602.4 kJ - 1075.0 kJ
Calculate the enthalpy of the reaction 2NO(g) + O2(g)2NO2(g) Hess's law states that "the heat released or absorbed in a chemical process is the same whether the process takes place in one or in several steps." It is important to recall the following rules: given the following reactions and enthalpies of formation: 1. ¢ N2(g) + O2(g)+NO2(g), AH; = 33.2 kJ 2. N2(g) + O2(g) NO(g), AHB = 90.2 kJ 1. When two reactions are added, their enthalpy values are...
answers to 5 and 6 D Question 5 2 pts Given the following reactions: 2S (s)+3 02 (3)- 2 SO3 (3) AH 790kJ s(s) +02 (g)-502 (g) ΔΗΡ-297 kJ What is the enthalpy value (in kJ) of the reaction in which sulfur dioxide is oxidized to sulfur trioxide? 2502 (g) + O2 (g) 2503 (g) ΔΗΡ ? D Question 6 2 pts Given the following reactions: CaCO3 (s) CaO (s) + CO2 (g) HP-178.1 kJ C (s, graphite) + O2...
I especially need help with understanding what the second question is asking. 4. Use Hess' Law to calculate the enthalpy change (AHⓇt) for this reaction: (12 pts.) 6C(s) + 6H2(g) + 3029) → C6H12O6(S) + using the following equations: A. C(s) + O2(g) → CO2(g) B. H2(g) + 1/2O2(g) → H2O(g) C. C6H12O6(s) + 6020) — 6CO2(g) + 6H2O() D. H2O0) → H2O(g) AH'= -393.5 kJ AH'= -241.8kJ AH'= -2803.0 kJ AH°= +40.7 kJ Why is this change in enthalpy...
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
Hence, the reaction enthalpy for the overall reaction is-297 kJ + (-99 kJ) = -396 kJ. Part C Hess's Law of Constant Heat Summation button within the activity and use the example shown to calculate the reaction enthalpy, AH CH, (g)+202 (g)-CO2 (g ) + 2H,O(1) Use the series of reactions that follow: Click on the for the following reaction: 1. C(s)+2H2 (g)->CH, (g). AH= -74.8 kJ. C)+O2 g)-CO2(g), AH= -393.5 kJ. 3. 2H2 (g) +O2(g) -+2H,6(g), AH-484.0 kJ 4....