Hint: What is the balanced equation for this reaction? Which elements react for

Question

Hint: What is the balanced equation for this reaction? Which elements react for form PCl5? What are the natural states of these reactants? Make sure you only form 1 mole of PCl5 in this equation.

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C ezto mheducation C 14 value: 10.00 points Enter your answer in the provided box. Find AS for the formation of 1 mole of PCls(g) from its elements. JIK. References eBook & Resources 1 out of 3 attempts Assistance Check My Work View Hint View Question Show Me Guided Solution Print Question Help Report a Problen

Explanation / Answer

The balanced equation for the formation of PCl5 gas is given as:

P4(s) + 10 Cl2(g) 4 PCl5(g)

The balanced equation for the formation of 1 mole of PCl5 gas is given as:

1/4 P4(s) + 5/2 Cl2(g) PCl5(g)

Sorxn = Soproducs - Soreactants

Sorxn = So [1 mol PCl5(g)] - So {1/4 mol P4(s) + 5/2 mol Cl2(g)}

Sorxn =   (353 J/Kmol) - [1/4 (41.1 J/Kmol) + 5/2 (223.0 J/Kmol)]

Sorxn =   -214.775 = -215 J/K

Sofor the formation of 1 mole of PCl5 gas is -215 J/K.

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