q worksheet9 - 1. Complete the chemical equations so that...

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PS 100 Experiment 9 Chapter 20 Date__________ Name (print)____________________ NetID _______________ Section______ TA ___________ Title: Activation energies and entropies Objectives: Students will observe how activation energies and entropies affect reaction rates. Instructions: In class you have seen several chemical reactions including (1)hydrogen combining with oxygen to make water; (2)iron oxide combining with aluminum to make iron and aluminum oxide; (3)water being broken into hydrogen and oxygen through electrolysis, and (4)hydrogen and oxygen combining using a palladium catalyst. You are about to see one more, (5)baking soda and vinegar forming carbon dioxide and sodium acetate solution.
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Unformatted text preview: 1. Complete the chemical equations so that they are balanced. ____ H 2 + O 2 = 2H 2 O 2Fe 2 O 3 + ____Al = 2Al 2 O 3 + _____Fe NaHCO 3 + CH 3 COOH = NaH 2 CCOOH + H 2 O + _____CO 2 2. Sketch a graph similar to figure 20.7 showing changes in energy for each of the reactions. 3. Which reactions are energetically favorable? Explain why? I personally participated in the activity and wrote the response in my own words: Signature:____________________ Extent of reaction e n e r g y Extent of reaction e n e r g y Extent of reaction e n e r g y Extent of reaction e n e r g y Extent of reaction e n e r g y...
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