12. The value of AH° for the reaction below is.-336 kJ. Calculate the heat (kJ) released...
The value of AH° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO (9) reacts completely. 200(g) + O2(g) → 2002(9) 65.7 0 103 0 -482 0207 2.89x103
5. Given the data below, what is AHⓇ for the following reaction? CH4(g) + 3Cl2(g) → CHCl3(g) + 3HCl(g) AHOICH4(9)] = -75 kJ/mol AHOICHCl3(9)] = -103 kJ/mol AH HCl(9)] = -92 kJ/mol A-304 kJ B-120 kJ C +322 kJ D +120 kJ E none of these
The overall reaction to produce chloroform from methane is CH4(g) + 3Cl2(g) ---> CHCl3(l) + 3HCl(g). Use the following intermediate reactions to calculate the enthalpy of the reaction, Hrxn. 1/2 H2(g) + 1/2 Cl2(g) ---> HCl(g) Hrxn = -92.3 kj C(s) + 2H2(g) ----> CH4(g) Hrxn = -74.8 kj C(s) + 1/2 H2(g) + 3/2 Cl2(g) ----> CHCl3(l) Hrxn = -134.5 kj
kl of heat are released when 80.9 grams 8) The value of AH for the reaction below is-72 kl. -- of HBr is formed in this reaction. H2(g) + Brz (e) → 2HBr (5) A) 144 B) 72 C) 0.44 D) 36 E) -72
717)Use the reactions below to calculate the standard change in enthalpy for the reaction of methane (CH4) with chlorine to form chloroform (CHC13) and hydrochloric acid: CH4(g) + 3Cl2(g) → CHCI3(g) + 3HCI(g) Reaction 1: HCI(g) → H2(g) + 2Cl2(g) AH° = +92.3 kJ Reaction 2: CH4(g) → C(s) + 2H2(g) AH° = +74.8 kJ Reaction 3: C(s) + 3H2(g) + 3/2Cl2(g) →CHCl3(g) AH° = -103.1 kJ x a. +270.2 kl b. +248.6 kJ PC. +64.0 kJ -120.6 kJ -305.2...
4. Calculate AH reaction. Express in units of kJ/mole H, 5. What is the AH value of the reverse reaction? Reading Question (Refer to Introduction section before answering the question): A student performs a coffee cup calorimetry lab similar to the one you will be performing. An acid solution is mixed with a basic solution and the temperature change is recorded. The student calculates the following: solution(surroundings) = 4011 J What is the value of qreaction(system)? Using the same procedure...
Question 19 3 pts The value of AH° for the reaction below is 5314 kJ. The amount of heat that is released by the reaction of 40.0 Og of C4H10 is 2C4H10(g) + 1302(g) 8CO2(g) + 10H20(1) 07312 kJ 1827 kJ 6.479 10-5 kJ 0.0001296 kJ 3656 kJ Question 20 3 pts How much heat is required to raise the temperature of 1.00 kg of water from 25°C to 50°C? (The specific heat of water is 4.184 J/g.°C) 209 kJ...
Calculate the number of kJ released for the reaction shown below, if you begin with 12 grams of hydrogen (H), and the AH = -572 kJ. +O2 HO 2H 2g 2ig) Remember to select an answer with the correct number of significant figures.
C Using the heats of formation below, calculate the heat of reaction for the following reaction: CH4(g) + H2O(g) → C2H5OH(E) AH® (kJ/mol) C2H4(g) 52.26 H2O(g) -241.8 C2H5OH(E) -235.1 kJ d Using the heats of formation below, calculate the heat of reaction for the following reaction: Fe2O3(s) + 2Al(s) - A1203(s) + 2Fe(s) AH(kJ/mol) Fe2O3(s) -824.2 Al(s) 0 Al2O3(s) -1676 Fe(s) 0 KJ
4. How many kJ of heat are released when 85.0 g of NaOH reacts with excess H2SO4? H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2 H2O(l) + 114 kJ 5. 2.50 g of octane, CHis was bumed in a bomb calorimeter causing the temperature to increase from 21.0°C to 35.5°C. The total heat capacity of the calorimeter was 8.33 kJ/°C. Calculate the heat of combustion for the reaction shown below. 2 CH 18(1) + 2502(9) ► 16 CO2(g) + 18 H2O(g)...