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Chem 115 Experiment 8 Post Lab, Heat of Neutralization

Chem 115 Experiment 8 Post Lab, Heat of Neutralization -...

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Chem 115: Experiment #8 Heat of Neutralization (40 points) Post-Lab Questions Name: James Anders Date: 10/6/07 Section: 11 TA: Chris Spina Room:______ Score:______ 1. If heat is given off in a chemical reaction, is the reaction endothermic or exothermic? (1 point) Exothermic a. Is the ∆H for this kind o f reaction negative or positive? (1 point) negative 2. What is a neutralization reaction? (1 point) A neutralization reaction occurs when an acid and a base (usually both are in aqueous solutions) react to form water and a salt 3. Define calorimeter. (1 point) a. What is used for the calorimeter in this week’s experiment? (1 point) A calorimeter is a device used for calorimetry, the science of measuring the heat of chemical reactions or physical changes as well as heat capacity. 4. If the difference in 25 o C and 5 o C is 20 o C (∆T = 20 o C), what is the difference if these temperatures are converted to Kelvin, i.e. what is the ∆T in Kelvin? (1 point) 20K 5. What are the hazards and safety precautions associate with the use of hydrochloric acid? (2 points)
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