Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C2H2 (-1300. kJ/mol), C2He (-1560. kJ/mol), and H2 (-286 kJ/mol), calculate AH for the reaction C2 H2 (g) + 2H2 (g) C2H6 (g) AH = kJ

Calculate the standard enthalpy change (kJ/mol) for the following process given the enthalpies of formation provided below. A + 2 B → 3 C AH¢A = 4 kJ/mol AH;B = 29 kJ/mol AH:C = 92 kJ/mol

Calculate the enthalpy of the reaction  2NO(g)+O2(g) yields 2NO2(g) given the following reactions and enthalpies of formation: 1. (1/2)N2(g)+O2(g) yields NO2(g), total enthalpy: 33.2kJ 2. (1/2)N2(g)+(1/2)O2(g) yields NO(g), total enthalpy: 90.2kJ

1. Calculate the enthalpy of reaction for the combustion of methane gas, CH4, to form CO,(g) + H,O(1).

Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product smells vile. Carbon disulfide is used in the manufacture of rayon and cellophane. The liquid burns as follows: CS (1) + 302(g)→ CO2(9) +2SO2(9) Calculate the standard enthalpy change for this reaction using standard enthalpies of formation. AH:(CS2 (1)) = 89.70 kJ/mol AH;(02(9)) = 0 kJ/mol AH;(CO2(9)) = -393.52 kJ /mol AH: (SO2(g)) =-296.8 kJ/mol Standard enthalpy change = kJ Submit Answer Try Another Version 6 item attempts remaining Visited Previous Next 8:30 PM 12/5/2021 43°F Cloudy ype here to search

A scientist measures the standard enthalpy change for the following reaction to be -1051.8 kJ 2H2S(g)+3 O2(g)- 2H2O(g) +2 SO2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O(g) is kJ/mol Submit Answer Retry Entire Group 9 more group attempts remaining

8. Ethanol, a common ingredient in many cosmetics and beauty products has a chemical formula of CH,CH,OHm: When ethanol undergoes combustion, it produces carbon dioxide and water vapor. Write the balance chemical reaction and calculate the enthalpy change for the chemical reaction. Use the table below for the values of standard enthalpy of formation of the compounds present in the reaction. CH3CH20H(1) 0 2(g) CO2(g) H20(g) Substance -393.5 -241.8 -277.7 AHG(kJ/mol)

The enthalpy of formation for H2O(g), CO2(g), and C2H5OH(l), in kJ/mol, are given as follows: DHfo[H2O(g)] = –241.8; DHfo[CO2(g)] = –393.5, and DHfo[C2H5OH(l)] = –277.6        How much heat is produced if 2.00 mole of ethanol (C2H5OH) is completely combusted according to the following equation?                  C2H5OH(l)  +  3O2(g)  -->  2CO2(g)  +  3H2O(g);          (A) 2470 kJ                                (B) 1230 kJ                                (C) 1790 kJ                                (D) 3580 kJ

2. Calculate the enthalpy for the following reaction: → 2NO2 (g) AH = ? kJ Nag) + 20zg) Using the following two equations: Nzig) + 2NO2 (e AH = +180kJ 2NO(g) O2(9) Ozg) 2NO(g) AH = +112kJ

Given the listed average bond energies (BE), calculate the enthalpy change for the production of one mole of methanol (CH3OH) by the following reaction. (There are two C=O double bonds in CO) CO2(g) + 3 H2(g) - CH;OH(g) + H2O(g) B.E.C-O = 300 kJ/mol B.E.C=0 = 700 kJ/mol B.E.H-H = 450 kJ/mol B.E.H-O = 500 kJ/mol B.E.H-C = 400 kJ/mol Select one: Oa. 250 kJ O b. -250 kJ Ос. 50 kJ d. -950 kJ Activate Windows О е. 950 kJ Go to Settings to activate Windows.