Ethane, C2H6, forms ·CH3 radicals at 700.°C in a first-order reaction, for which k = 1.98 h-1.

(a) What is the half-life for the reaction?

(b) Calculate the time needed for the amount of ethane to fall from 1.00 10-3 mol to 2.48 10-4 mol in a 500. mL reaction vessel at 700.°C.

(c) How much of a 6.87 mg sample of ethane in a 500. mL reaction vessel at 700.°C will remain after 47 mins?

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  1. See your earlier posts. Most of these are the same type question.

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