CH4 (9) +20₂(g) → CO₂(g) + 2H₂O(l) H-891 kJ a. Calculate the enthalpy change if 2.01 g methane is burned in excess oxygen. Enthalpy change = kJ b. Calculate the enthalpy change if 1.72 × 10³ L methane gas at 748 torr and 25°C is burned in excess oxygen. Enthalpy change = kJ

CH4 (9) +20₂(g) → CO₂(g) + 2H₂O(l) H-891 kJ a. Calculate the enthalpy change if 2.01 g methane is burned in excess oxygen. Enthalpy change = kJ b. Calculate the enthalpy change if 1.72 × 10³ L methane gas at 748 torr and 25°C is burned in excess oxygen. Enthalpy change = kJ

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

4. H₂SO4 reacts with NaOH to form water and Na₂SO4. In a simple calorimeter, a 100.00 mL sample of 0.355 mol/L H₂SO4(aq) is mixed with 50.00 mL of excess NaOH(aq). During the reaction, there is a rise in temperature by 8.200 °C. Calculate the molar enthalpy change for the above reaction. SHOW ALL YOUR WORK.
A sample of 3.20 g of calcium hydroxide, Ca(OH)2(s) is added to 90.0 mL of dilute hydrochloric acid in a calorimeter. The temperature goes from 22.4°C to 24.7°C. Calculate the molar enthalpy of the reaction?
Chaeyoung wants to study the heat transfer between a 50 g of heated block of iron (cFe = 0.449 J/g ⁰C) at 500 ⁰C and 100 g of water (cH2O = 4.184 J/g ⁰C) at 10 ⁰C using a calorimeter. Find qH2O and qFe.
1. A quantity of 4.275 g of an organic compound with a molecular formula C₁2H₂2 was burned in a constant volume bomb calorimeter. The temperature of the water rose from 20.50 °C to 37.50°C. If the quantity of water surrounding the calorimeter was exactly 2255 g and the heat capacity of the bomb calorimeter was 1.150kJ/°C, calculate the molar heat of combustion in kJ/mol of C₁2H22. (HINT: Double check units to ensure that you are adding like units)
What is the enthalpy change when 2.00 mol of oxygen (O2) react? C12H22O11(s) + 12 O2(g) → 12 CO2(g) + 11 H2O(l) ΔH = -5644 kJ
Determine the enthalpy of reaction (DHxn) in kJ/ mol H20 formed if an acid/base neutralization if 13.6 mL of 1.205 M NaOH is reacted with 25.0 mL of 1.108 M HCI causing an increase in the calorimeter temperature of 6.85 °C. Use 3.93 J/g°C for the specific heat capacity of the final solution and the density for the final solution is 1.02 g/mL.
Consider the following reaction: CH4 (9) + 20, (g) → CO2(g) + 2H,0(1) AH=-891 kJ a. Calculate the enthalpy change if 2.59 g methane is burned in excess oxygen. Enthalpy change = kJ b. Calculate the enthalpy change if 3.04 × 10° L methane gas at 737 torr and 25°C is burned in excess oxygen. Enthalpy change = kJ
The enthalpy of combustion of isooctane (C8H18), one of the many hydrocarbons in gasoline is 5.45 × 103 kJ/mol. Calculate the enthalpy change per gram of isooctane and per liter of isooctane (d = 0.688 g/mL).
Ammonia reacts with oxygen according to the equation: 4NH3(g)+5O2(g)→4NO(g)+6H2O(g),ΔHrxn=−906 kJ. Calculate the heat (in kJ) associated with the complete reaction of 155 g of NH3 Express the heat in kilojoules to three significant figures.
（1）Consider the reaction: 2A (g) + 3 B (g) → 2 C (g) ΔHrxn = +254.3 kJ What will be the enthalpy change (in kJ) if 0.471 mol B reacts in excess A? （2）Consider the reaction: C (s) + O2 (g) → CO2 (g) ΔHrxn = -393.5 kJ What mass of carbon (in g) must be reacted via this mechanism to release 581.2 kJ of heat?