Chemistry Solved_Part_38

Chemistry Solved_Part_38 - Week 21 Discussion: 1. Was your...

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©2010 Digital Interactive Video Education Week 21 113 Discussion: 1. Was your hypothesis correct? What does k equal? What are its units? What was your R 2 ? 2. List at least three sources of error. Part 2 Introduction The rate constant, k, varies with the temperature of the reactants. An equation relating k with temperature was Frst proposed by the Dutch chemist J. H. van ‘t Hoff in 1884; Fve years later in 1889, the Swedish chemist Svante Ar- rhenius provided a physical justiFcation and interpretation for it. Equations relating k and temperature are referred to as Arrhenius equations. A a general rule of thumb, without solving the equation, is that for every 10°C increase in temperature the rate of reaction doubles (http://en.wikipedia.org/wiki/Arrhenius_equation). In Part 2 of Labo- ratory Activity 19, we will use this information to answer the following question. Does the reaction rate of sodium thiosulfate(Na 2 S 2 O 3 ) and hydrochloric acid (HCl) follow a pattern of doubling with every 10
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Chemistry Solved_Part_38 - Week 21 Discussion: 1. Was your...

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