Campbell Ryan
09/08/2024 · Primary School

Moles of \( \mathrm{H}^{+} \)that were neutralized (mol). Hint: number of moles of neutralized \( \mathrm{H}+ \) is equal to the number of moles of \( \mathrm{H}+ \) used in the neutralization reaction. Calculate the heat for the studied reaction in Joules.

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To calculate the heat for a neutralization reaction, we need to know the number of moles of \( \mathrm{H}^+ \) that were neutralized and the enthalpy change associated with the reaction. The heat released or absorbed during the reaction can be calculated using the formula: \[ q = n \times \Delta H \] where: - \( q \) is the heat (in Joules), - \( n \) is the number of moles of \( \mathrm{H}^+ \) that were neutralized, - \( \Delta H \) is the enthalpy change for the reaction (in Joules per mole). ### Steps to Calculate Heat: 1. **Determine the number of moles of \( \mathrm{H}^+ \)**: - If you have the concentration and volume of the acid solution, you can calculate the moles of \( \mathrm{H}^+ \) using the formula: \[ n = C \times V \] where \( C \) is the concentration (in moles per liter) and \( V \) is the volume (in liters). 2. **Find the enthalpy change (\( \Delta H \))**: - The enthalpy change for the neutralization of a strong acid with a strong base is typically around \(-57.1 \, \text{kJ/mol}\) (or \(-57100 \, \text{J/mol}\)). 3. **Calculate the heat**: - Substitute the values of \( n \) and \( \Delta H \) into the heat equation. ### Example Calculation: Assuming you have 0.1 moles of \( \mathrm{H}^+ \) neutralized: 1. **Moles of \( \mathrm{H}^+ \)**: \[ n = 0.1 \, \text{mol} \] 2. **Enthalpy change**: \[ \Delta H = -57100 \, \text{J/mol} \] 3. **Calculate heat**: \[ q = n \times \Delta H = 0.1 \, \text{mol} \times (-57100 \, \text{J/mol}) = -5710 \, \text{J} \] Thus, the heat for the reaction would be \(-5710 \, \text{J}\), indicating that the reaction is exothermic. ### Conclusion: To provide a specific answer, please provide the number of moles of \( \mathrm{H}^+ \) that were neutralized or any additional details about the reaction conditions.

Quick Answer

To calculate the heat of a neutralization reaction, use the formula \( q = n \times \Delta H \), where \( q \) is the heat in Joules, \( n \) is the number of moles of \( \mathrm{H}^+ \) neutralized, and \( \Delta H \) is the enthalpy change per mole. The typical enthalpy change for a strong acid-strong base neutralization is \(-57100 \, \text{J/mol}\).
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