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Procedure:
Part I: The Dissolving of Solid Sodium Hydroxide in Water
Measure out approximately 205 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table.
Place a plastic measuring trough on top of the digital balance, and then zero the balance (press the tare button) so that the mass of the trough will be “ignored” and will not be added to the total mass measured by the balance.
Measure out approximately three to five scoops of solid sodium hydroxide and record the mass to your data table.
Place the solid sodium hydroxide into the water in the calorimeter and replace the lid immediately. Stir gently until the solid is completely dissolved and record the highest temperature reached.
Part II: The Reaction of Sodium Hydroxide Solution with Hydrochloric Acid
Measure out approximately 100 mL of 0.50 M hydrochloric acid solution and 100 mL of 0.50 M sodium hydroxide solution. Record both volumes on your data table.
Pour the hydrochloric acid solution into the calorimeter. Measure and record the initial temperature of each solution and record on your data table.
Add the sodium hydroxide solution to the acid solution in the calorimeter and immediately replace the lid of the calorimeter. Stir the mixture and record the highest temperature reached.
Part I:
Insert a complete data table, including appropriate significant figures and units, in the space below. Also include any observations that you made over the course of Part I.
Part II:
Insert a complete data table, including appropriate significant figures and units, in the space below. Also include any observations that you made