THERMODYNAMICS: A 1.09 g sample of acetic acid (HC2H302) was burned in excess oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 KJPC, contained 7 g of water. The temperature of the calorimeter and its contents increased from 24.3°C to 27.95°C. What is AH (in kJ) for the combustion per 1.00 mol of acetic acid? MW of acetic acid is 60 g/mol. (Round off the final answer to ONE decimal place. Do not include the unit.)

THERMODYNAMICS: A 1.09 g sample of acetic acid (HC2H302) was burned in excess oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 KJPC, contained 7 g of water. The temperature of the calorimeter and its contents increased from 24.3°C to 27.95°C. What is AH (in kJ) for the combustion per 1.00 mol of acetic acid? MW of acetic acid is 60 g/mol. (Round off the final answer to ONE decimal place. Do not include the unit.)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Gram for gram, fats in food have much more chemical energy than sugar. One component of fat is stearic acid, C18H36O2. When a sample of 1.02 g of stearicd acid was burned completely in a bomb calorimeter, the temperature of the calorimeter rose by 4.26 oC. The heat capacity of the calorimeter was 9.43 kJ/oC. Calculate the molar heat of combustion of stearic acid in kilojoules per mole. answer: (-11189 kJ/mol)
The major source of aluminum in the world is bauxite (mostly aluminum oxide). Its thermal decomposition can be written as: Al2O3(s) → 2Al(s) + 3/2 O2(g) ?H = 1676 kJ If aluminum is produced this way, how many grams of aluminum can form when 1.00 x103 kJ of heat is transferred.
In a laboratory investigation into the neutralization reaction; HNO3 (aq) + NaOH(s) → NaNO3 (aq) + H2O (l) a researcher adds 5.3 g of solid sodium hydroxide to 200.0 mL of 1.0 M nitric acid solution in a polystyrene calorimeter. The temperature changes from 21.0°C to 28.5°C. Calculate the molar enthalpy of neutralization of sodium hydroxide.
4. The reaction of 250.0 mL of a 1.00 M hydrochloric acid solution with 250.0 mL of a 1.00 M sodium hydroxide solution was carried out in a constant pressure calorimeter. The total heat capacity of the calorimeter plus solutions was 6.45 kJ/K. The temperature of the calorimeter and solutions increased by 2.11°C. What is AH (in kJ) for the neutralization of 1.00 mol HCl(aq) by NaOH(aq)? A) -54.4 B) -21.2 +12.6 +54.4 E) -12.6
THERMODYNAMICS: A 1.09 g sample of acetic acid (HC2H2O2) was burned in excess oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 KJ°C. contained 7g of water. The temperature of the calorimeter and its contents increased from 24.13°C to 27.95°C. What is AH (in kJ) for the combustion per 1.00 mol of acetic acid? MW of acetic acid is 60 gimol. (Round off the final answer to ONE decimal place. Do not include the unit.)
A chemist measures the enthalpy change AH during the following reaction: 2 Al(s) + Fe,O3(s)→Al,03(s) + 2 Fe(s) AH=-852. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ x10 Al,0, (s) + 2Fe(s) → 2Al(s) + Fe,0,(s) |kJ 3 1,0,6) + mo) -– MG) +,0,6) Fe(s) Al,03 (s) Al (s) + - Fe,0, (s) ||kJ 4 Al (s) + 2 Fe,03(s) 2 Al,03 (s) + Fe(s) | kJ
You mix 125 mL of 0.250 M CSOH with 50.0 mL of 0.625 M HF in a coffee-cup calorimeter, and the temperature of both solutions rises from 21.70 °C before mixing to 24.59 °C after the reaction. CsOH(aq) + HF (aq) → CsF(aq) + H₂O(l) What is the enthalpy of reaction per mole of CSOH? Assume the densities of the solutions are all 1.00 g/mL, and the specific heat capacities of the solutions are 4.2 J/g. K. Enthalpy of reaction = kJ/mol
4. The combustion of toluene (C7H8) has a heat of reaction of -3.91 x 10³ kJ/mol. When 1.55g toluene undergoes combustion in a bomb calorimeter, the temperature rises from 23.12°C to 37.57°C. Find the heat capacity of the bomb calorimeter.
What is the molar heat of combustion of butane, C4H10, if combustion of 2.00 g of butane causes a temperature rise of 8.45°C in a bomb calorimeter that has a heat capacity of 7.50 kJ/°C?
Aluminum metal can be produced by reducing solid aluminum oxide (Al2O3) with carbon (graphite). Carbon monoxide is the other product. What is the enthalpy change (AH° in kJ) when 25.0 g of aluminum metal is produced in this manner? You will need to balance the chemical equation. Enthalpies of formation (in kJ mol¯¹): Al2O3(s) -1675.7 CO(g) -110.5 Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a -623 b 623 с -734 d 734
8
The addition of hydroiodic acid to a silver nitrate solution precipitates silver iodide according to the reaction: AGNO3 (aq) + HI(aq) → AgI(s) + HNO3 (aq) When 50.0 mL of 5.00x10-2 M AgNO3 is combined with 50.0 mL of 5.00x10-2 M HI in a coffee-cup calorimeter, the temperature changes from 22.40 °C to 22.91 °C. Part A Calculate AHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and Cs = 4.18 J/(g·°C) as the specific heat capacity of the solution. Express the energy to two significant figures and include the appropriate units. HẢ Units Value ΔΗΚΗ rxn