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For a first order reaction, a graph of log([R]/(mol/L))… | StemPy Lab

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For a first order reaction, a graph of log([R]/(mol/L)) against time is a straight line with a slope of -0.0120 min⁻¹. What is the half-life?

ChemistryMediumHigh School (11–12)Chemical Kinetics › Integrated Rate Equations and Half-Life AP A-Level IB

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For a first order reaction, a graph of $\log([R]/(\text{mol/L}))$ against time is a straight line with a slope of $-0.0120\ \text{min}^{-1}$ . What is the half-life?

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← A first order reaction is 60 % complete in 20 min. How long does it take to be 90 % complete? Take log 2 = 0.301.Which of these statements are correct? (i) The unit of k for a first order reaction stays the same when the concentration is measured in bar instead of mol/L. (ii) The half-life of a zero order reaction doubles when the start concentration doubles. (iii) A first order reaction is about 94 % complete after four half-lives. (iv) For a zero order reaction a graph of ln[R] against time is a straight line. →

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