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April 18, 2014

Homework Help: Thermochemistry

Posted by LaurenB on Saturday, December 3, 2011 at 2:44pm.

Suppose 23.6 g of ClF3(g) and 40 g of Li(s) are mixed and allowed to react at atmospheric pressure and 25 C until one of the reactants is used up, producing LiCl(s) and LiF(s). Using the NIST value for the enthalpy of formation of ClF3 (webbook.nist.gov), calculate the enthalpy change for this reaction, keeping in mind that this is a negative number for an exothermic process.

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