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The reaction between sulfur gas (S2) and carbon (C) at high temperatures (900C) results in the...

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Chemistry

The reaction between sulfur gas (S2) and carbon (C)at high temperatures (900C) results in the formation of carbondisulfide (CS2). The reaction is: C(s) +S2(g) = CS2(g). What is the concentration (inmoles in reaction chamber) of CS2(g) at equilibrium if3.00 moles of S2(g) and excess carbon are initiallyadded to the 1.00 L reaction chamber? The Keq for thisreaction is 3.50.

Answer & Explanation Solved by verified expert
3.9 Ratings (368 Votes)

Solution :-

C(s) + S2(g) = CS2(g)

Initial concentration of S2= 3.00 mol / 1.00 L = 3.00 M

Equilibrium concentration of the CS2 = ?

Keq = 3.50

Lets make the Ice table

C(s) +    S2(g)     ----- >         CS2(g)

             3.00 M                         0

              -x                                  +x

            3.00 –x                        x

Keq = [CS2]/[S2]

3.50 = [x] / [3.00-x]

X= 2.33

Therefore the equilibrium concentration of the CS2(g) = 2.33 M
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