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at a certain temperature the rate of this reaction is first order in with a rate constant of suppose a vessel contains at a concentration of . calculate how long it takes for the concentration of to decrease by . you may assume no other reaction is important. round your answer to significant digits.

Answer :

1/8 of a second (2 significant figures). When this reaction occurs at a specific temperature, its rate is first order with a rate constant of let's say a concentration in a vessel.

What exactly is rate constant k?

The proportionality constant (k) connecting the rate of the reaction to reactant concentrations determines the specific rate constant (SRC).

The reaction's equation is CICH2CH2Cl (g) --> CH2CHCI (g) + HCl (g)

Rate constant (k) equals 2.01 s-1

This is a first order reaction based on the rate constant's units.

Initial Concentration: 1.34 M t =

Final concentration equals 20 percent of 1.34, or 0.268 M.

First order reactions have the integrated rate rule ln[A] = ln[A]o - kt ln(0.268) = ln(1.34) - 2.01(t) -2.01(t) = - 1.6094 t = 0.8007 0.80 seconds (2 significant figures).

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