In a coffee-cup calorimeter, 56.0 mL of 0.100 M AgNO3 and 56.0 mL of 0.100 M HCl are mixed to yield the following reaction.
Ag+(aq) + Cl −(aq) → AgCl(s)
The two solutions were initially at 23.66°C, and the final temperature is 24.46°C. Calculate the heat that accompanies this reaction in kJ/mol of AgCl formed. Assume that the combined solution has a mass of 112.0 g and has a specific heat capacity of 4.18 J/°C · g.
WebAssign will check your answer for the correct number of significant figures. 
 kJ/mol

To calculate the heat accompanying this reaction in kJ/mol of AgCl formed, we will use the concept of calorimetry, specifically the equation:

\[
q = m \cdot C \cdot \Delta T
\]

Where:
- \( q \) is the heat absorbed or released (in joules, J),
- \( m \) is the mass of the solution (in grams, g),
- \( C \) is the specific heat capacity of the solution (in J/°C·g),
- \( \Delta T \) is the change in temperature (in °C).

### Step 1: Calculate the change in temperature
\[
\Delta T = T_{\text{final}} - T_{\text{initial}} = 24.46°C - 23.66°C = 0.80°C
\]

### Step 2: Calculate the heat \( q \)
Given:
- \( m = 112.0 \, \text{g} \),
- \( C = 4.18 \, \text{J/°C·g} \),
- \( \Delta T = 0.80 \, \text{°C} \).

Now, calculate \( q \):
\[
q = 112.0 \, \text{g} \times 4.18 \, \text{J/°C·g} \times 0.80 \, \text{°C} = 374.59 \, \text{J}
\]

### Step 3: Convert the heat \( q \) from joules to kilojoules
\[
q = 374.59 \, \text{J} = 0.37459 \, \text{kJ}
\]

### Step 4: Calculate moles of AgCl formed

In a coffee-cup calorimeter, 56.0 mL of 0.100 M AgNO3 and 56.0 mL of 0.100 M HCl are mixed to yield the following reaction. Ag+(aq) + Cl−(aq) → AgCl(s). The two solutions were initially at 23.66°C, and the final temperature is 24.46°C. Calculate the heat that accompanies this reaction in kJ/mol of AgCl formed. Assume that the combined solution has a mass of 112.0 g and has a specific heat capacity of 4.18 J/°C·g. WebAssign will check your answer for the correct number of significant figures. kJ/mol

Learn how to solve a calorimetry problem involving the reaction between AgNO3 and HCl in a coffee-cup calorimeter. Calculate the heat that accompanies the formation of AgCl using specific heat capacity, mass, and temperature change. Suitable for undergraduate chemistry students.

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