What is the change in enthalpy in joules when 5.44 x 10- mol of AgCI dissolves in water according to the following chemical equation: AgCI(s) – Ag"(aq) + Cr(aq) AH = 65.5 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.
![**Question 21 of 26**
*Problem Statement:*
What is the change in enthalpy in joules when \( 5.44 \times 10^{-4} \) mol of AgCl dissolves in water according to the following chemical equation:
\[ \text{AgCl(s)} \rightarrow \text{Ag}^+(aq) + \text{Cl}^-(aq) \quad \Delta H = 65.5 \, \text{kJ} \]
*Equation Calculation:*
- The "Starting Amount" field is shown with a placeholder for entering values.
- Below is a series of buttons to perform the necessary calculations:
- **Add Factor:** Multiplication brackets \( (\times) \) for calculation flexibility.
- **Constants and Values Available in Buttons:**
- Numerical constants: \( 1, 1000, 0.001, 3.56 \times 10^0, 0.0356, 35.6, 0.00831, 65.5 \)
- Avogadro's number: \( 6.022 \times 10^{23} \)
- Values relevant to the question: \( 5.44 \times 10^{-4} \)
- **Units and Conversions:**
- g Ag\(^+\), J, g Cl\(^-\), mol Ag\(^+\), kJ, mol AgCl, g AgCl, mol Cl\( ^- \)
*Buttons for Calculations:*
- An "Answer" box where the final result can be placed.
- A "Reset" button to clear values if needed.
This system allows for interactive engagement to calculate the enthalpy change, experimenting with different factors and conversion units to reach the correct answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F212969a2-3b32-4b50-ad46-807dee950c4f%2Fd05f27ea-b7a1-4832-a250-7fdb2171869c%2Fk2sa5a_processed.png&w=3840&q=75)
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