Heating Lab 1

Heating Lab 1 - Heat of Neutralization Inquiry Activity By:...

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Heat of Neutralization Inquiry Activity By: Ryan Kusy and Mike Burke
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Purpose:  The purpose of this lab is to measure, using a calorimeter, the energy changes accompanying  neutralization reactions.  References: Nelson, John H. and Kemp, Kenneth C. Laboratory Experiments  to accompany Chemistry: The Central   Science , 9 th  ed. Upper Saddle River, NJ: Pearson Education, Inc., 2003. Balanced Chemical Reactions: HCl (aq)  + NaOH (aq)    NaCl (aq)  + H 2 0 (l) HC 2 H 3 O 2(aq)  + NaOH (aq)    NaC 2 H 3 O 2(aq)  + H 2 0 (l) Hazards and Safety: Goggles must be worn at all times. Hair and lose clothing must be removed or tied back. Be careful when lighting the Bunsen burner that nothing flammable is near it, unless instructed  by the lab.
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Watch while pouring the hot water and acid into the calorimeter that nothing is splashed out of  the container. Do not remove the temperature probe from the liquid until the full time has elapsed and your  data is recorded. Do not remove the cardboard square until the full time has elapsed and the data is recorded. Materials:  Glassware Hardware Reagents 400 mL beaker 50 mL graduated  cylinder 250 mL beaker Bunsen Burner Wire gauze Cardboard square with  hole in the center Go! Link temperature  probe 2 Styrofoam cups Ring stand Iron ring 1 M HCl 1 M HC 3 H 3 O 2 1 M NaOH H 2 0 Procedure: - Set up and observe calorimeter before performing lab - Measure 50 ml of cold water in a Styrofoam cup  - Measure 50 ml of water in a beaker and heat to 15-20 degrees higher than room temperature
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o While heating, leave thermometer in beaker - Measure temperature of cold water -  Pour hot water into cold water and measure with calorimeter for two minutes - Record temperature results for time periods between 3 and 5 minutes o Graphs should be set as time vs. temperature - Dispose of water down the sink  - Measure 50 ml of NaOH water in a Styrofoam cup  - Measure 50 ml of HCl in a beaker, do not heat the acid
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This note was uploaded on 05/02/2010 for the course ECON 4428 taught by Professor Dr.siwak during the Spring '10 term at Drew.

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Heating Lab 1 - Heat of Neutralization Inquiry Activity By:...

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