Experiment 8 calorimetry

Experiment 8 calorimetry - o C) VS time (sec) Compute for...

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DATE PERFORMED:  July 30, 2008 EXPERIMENT NO. 8 CALORIMETRY Objectives: 1.  To effectively determine the enthalpy values of the system by tracing the temperature change of the  surroundings. 2. To measure the amount of heat in a system. Apparatus and Materials: Styrofoam Cube or Ball Rubber Stopper thermometer 1.00 M HCl 6” test tube 1.00 M NaOH 50mL graduated cylinder 1.00 M HNO 3 Schematic Diagram: Calibration 10.0mL of 1.0 M HCl into test tube Record temperature – time at 15sec. intervals until temperature is constant. (t initial ) Add 5.0 mL of 1.0 M NaOH Record temperature – time at 30 sec intervals while swirling contents. Continue taking temperature – time data until temperature is constant. (t final ) Make a graph of temp. (
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Unformatted text preview: o C) VS time (sec) Compute for heat capacity of the calorimeter, C cal . Determination of Enthalpy Measure 10.0mL of 1.00 M HNO3 into calorimeter. Record temperature time at 15sec intervals while swirling contents. (t initial ) Add 5.0 mL 1.00 M NaOH Continue taking temperature time data until temperature is constant. (t final ) Make a graph of temp. ( o C) VS time (sec) Compute for enthalpy reaction of nitric acid and NaOH. Special Notes: 1. Dilute all solutions with tap water and flush directly down the sink with copious running water. 2. Dispose the used Styrofoam into the solid waste container. 3. Do not change test tubes in the whole experiment....
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Experiment 8 calorimetry - o C) VS time (sec) Compute for...

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