Useful formulas/constants: 1/[A] = 1/[A]o + kt ln ([A]o/[A]) = kt R = 0.0821 L*a

Question

Useful formulas/constants: 1/[A] = 1/[A]o + kt ln ([A]o/[A]) = kt R = 0.0821 L*atm/mol*K R = 8.314 J/mol*K The following composition reaction, SO2Cl2 -> SO2 + Cl2, was run in a laboratory. The following data was obtained: Time (s) Pressure of SO2Cl2 (atm) a) What is the overall order of this reaction? Explain. You must show complete proof of this answer on a separate piece of paper for full credit. (15 points) b) What is the value of the rate constant? (6 points) c) What is the final pressure of SO2Cl2 after 1124 seconds? (8 points) d) What is the half-life (t1/2) of SO2Cl2? (6 points)

Explanation / Answer

You have to employ Linear Regression.

If you don't have a guess try first order because this could the easiest solution and if that doesn't work solve for higher orders.

In your case the reaction is first order: -ln(P/P0)=-kt with P0=0.947 atm the pressure at t=0 s. Linear Regression results in k= -2.17*10^-5 s^ -1 and a coefficient of determination r=1.00.

c ) ln (P/1) = - K 1124

P = 1.024 atm

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