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April 20, 2014

Homework Help: chemistry

Posted by Leila on Friday, March 16, 2012 at 10:52pm.

Consider the following reaction at 298 K:
C(graphite) +2Cl2 (g) -----> CCl4(l)

Calculate the following quantities.

Delta H: -139 kJ/mol

deltaS(sys)=? J/mol*K
deltaS(surr)=? J/mol*K
deltaS(univ)=? J/mol*K


My answer is:
deltaS(sys)=-253.3J/mol*K
deltaS(surr)=466.4 J/mol*K
deltaS(univ)=231.4 J/mol*K

Delta (surr) and (univ) are correct. But delta (sys) is wrong...please help thanks!

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