Experiment – A Lab to Determine Related Heats of Neutralization, Reaction and Solution to Verify Hess’s Law.
Directions: To complete the experiment, read the laboratory experiment in the manual, watch the video below, and complete the data table below.
The experimental report must be submitted to the appropriate Blackboard assignment folder.
Reading Assignment: Heats of Neutralization
Experimental Videos: Heats of Neutralization | The video just shows how the reactions are done. Use the data below to complete the lab. |
Simulated Data:
Use this information to plot Temperature VS Time (find the time in the manual)
Reaction 1 |
Reaction 2 | Reaction 3 | Reaction 4 | ||||
Temperature (°C) | Temperature (°C) | Temperature (°C) | Temperature (°C) | ||||
21.1 | 21.5 | 21.0 | 21.0 | ||||
28.0 | 22.5 | 21.0 | 22.0 | ||||
28.0 | 27.8 | 21.0 | 23.0 | ||||
28.0 | 27.8 | 21.0 | 24.0 | ||||
28.0 | 27.8 | 21.0 | 25.0 | ||||
27.9 | 27.6 | 21.0 | 28.0 | ||||
27.8 | 27.4 | 21.0 | 30.0 | ||||
27.5 | 27.4 | 21.0 | 35.0 | ||||
27.4 | 27.3 | 21.0 | 40.0 | ||||
27.3 | 27.2 | 21.0 | 41.0 | ||||
27.1 | 27.0 | 21.0 | 42.0 | ||||
26.9 | 26.8 | 21.0 | 42.5 | ||||
26.8 | 26.8 | 21.0 | 42.5 | ||||
26.8 | 26.8 | 31.0 | 42.3 | ||||
26.8 | 26.8 | 31.0 | 42.0 | ||||
26.7 | 26.8 | 30.8 | 42.0 | ||||
26.7 | 26.8 | 30.6 | 42.0 | ||||
26.6 | 26.8 | 30.5 | 42.0 | ||||
Heat of Neutralization Data Sheet | |||||||
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Reaction 1. The enthalpy of neutralization of HCl (aq) and NaOH (aq). | |||||||
Molarity of HCl (mol L-1) | 1.00 | Molarity of NaOH (mol L-1) | 1.00 | ||||
Volume of HCl (mL) | 50.0 | Volume of NaOH (mL) | 50.0 | ||||
Moles of HCl (mol) |
| Moles of NaOH (mol) |
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Initial Temperature (°C) | 21.0 | Limiting Reactant |
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Final Temperature (°C) | 28.0 | q of reaction (J) |
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Change in Temperature from Graph (°C) | q/mol limiting reactant (J/mol) |
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Reaction 2. The enthalpy of neutralization of CH3COOH (aq) and NaOH (aq) | |||||||
Molarity of CH3COOH (mol L-1) | 1.0 | Molarity of NaOH (mol L-1) | 1.0 | ||||
Volume of CH3COOH (mL) | 50.8 | Volume of NaOH (mL) | 50.0 | ||||
Moles of CH3COOH (mol) |
| Moles of NaOH (mol) |
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Initial Temperature (°C) | 21.5 | Limiting Reactant |
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Final Temperature (°C) | 27.3 | q of reaction (J) |
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Change in Temperature from Graph (°C) |
| q/mol limiting reactant (J/mol) |
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Reaction 3. The enthalpy of solution of NaOH(s) | |||||||
Volume of H2O (mL) | 50.0 | Mass of NaOH (g) | 2.000 | ||||
Initial Temperature (°C) | 21.0 | Moles of NaOH (mol) |
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Final Temperature (°C) | 29.5 | q of reaction (J) |
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Change in Temperature from graph (°C) |
| q/mol limiting reactant (J/mol) |
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Reaction 4. The enthalpy of neutralization of NaOH(s) and HCl(aq) | |||||||
Molarity of HCl (mol L-1) | 1.0 | Mass of NaOH (g) | 2.000 | ||||
Volume of HCl (mL) | 50.0 | Moles of NaOH (mol) |
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Moles of HCl (mol) |
| limiting reactant |
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Initial Temperature (°C) | 21.0 | q of reaction (J) |
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Final Temperature (°C) | 42.5 | q/mol limiting reactant (J/mol) |
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Change in Temperature from Graph (°C) |
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