Enthalpy of Reaction Lab

I’m studying for my Chemistry class and need an explanation.

Procedure

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Click the Experiment tab

Choose “Run Experiment”

Click on “Solutions” tab

Choose Hydrochloric Acid

Slide Volume slider to 100mL

Slide Molarity slider to 1.50M

Click the box next to “Show specific heat capacity”

RECORD THE INITIAL TEMPERATURE

Click Next

Click on “Solutions” tab

Choose Sodium Hydroxide

Slide Volume slider to 100mL

Slide Molarity slider to 1.50M

Click the box next to “Show specific heat capacity”

RECORD THE INITIAL TEMPERATURE

Click Next

Click the box next to “Show graph view”

Click the box next to “Show microscopic view”

Click Start

RECORD FINAL TEMPERATURE

Calculations

Assume the density of the solution is 1.00g/mL and determine the total mass of the solution in your calorimeter.

Calculate the change in temperature ΔT from your recorded temperature data.

Calculate the heat of the solution (qsoln) in the calorimeter.

Determine the heat of the reaction (qrxn)using conversion of energy.

Determine the enthalpy of the reaction by dividing the heat of the reaction by the moles of acid.

Compute the %accuracy for the enthalpy of reaction. Assume that the “correct”values for the enthalpy of reaction are ΔH = -58 kJ/mol acid for the reaction of sodium hydroxide with hydrochloric acid.

Sample Solution

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