What is the change in enthalpy in kilojoules when 3.24 g of CH;OH is completely reacted according to the following reaction 2 CH;OH(g) - 2 CH.(g) + O2(g) AH = 252.8 kJ
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![**Interactive Learning Module: Calculating Change in Enthalpy**
**Objective:** Determine the change in enthalpy in kilojoules when 3.24 grams of CH₃OH is completely reacted.
**Reaction Overview:**
\[ 2 \, \text{CH}_3\text{OH (g)} \rightarrow 2 \, \text{CH}_4\text{ (g)} + \text{O}_2\text{ (g)} \]
\[ \Delta H = 252.8 \, \text{kJ} \]
**Instructions:**
1. **Starting Amount Panel:**
- Input the initial quantity of CH₃OH, given as 3.24 grams.
2. **Calculation Interface:**
- Utilize the provided calculator buttons to input values and factors relevant to the calculation.
- The numbers available represent potential coefficients and constants used in conversion (e.g., molar mass, Avogadro's number).
3. **Available Buttons:**
- **Numbers:** Includes several numeric values like \[ 1, 0.001, 32.00, \ldots, 6.022 \times 10^{23} \]
- **Units and Conversions:** \[ \text{g CH}_4, \text{mol CH}_3\text{OH}, \text{J}, \text{mol CH}_4, \text{g CH}_3\text{OH}, \text{g O}_2, \text{mol O}_2, \text{kJ}\]
4. **Solution Input:**
- Enter your calculated enthalpy change in the answer box.
- Use the reset button to clear inputs and start over if necessary.
This module helps students understand stoichiometry and enthalpy calculations by simulating a real-world chemical reaction scenario.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6cad9fc-aa22-494d-997b-d7e31e29d4fe%2F2b00b62f-2274-4105-8b0a-8312180cfc39%2F707telh_processed.png&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
