Question

14.3 | Use the graph in Figure 14.5 to estimate the rate of reaction with respect to HI at 2.00 minutes after the start of the reaction. (Hint: On the graph, the time is given in seconds.) 14.4 | Use the graph in Figure 14.5 to estimate the rate of reaction with respect to HI at 250 seconds after the start of the reaction.

14.2 Measuring Reaction Rates 643 Figure 14.5 Effect of time on concentration. The data for this plot of the change in the concentration of HI with time for the rcaction, 0.10 At this instant in time 0.027 mol/L 0,09 Slope 110 s 0.08 0.00025 mol L-1 s-1 rate 2HI()H2( Lg 0.07 rate 2.5 x 10-4 mol L-1-1 + 0.06 at 508 °C are taken from Table 14.1 [HI (moln) 0.05 0.027 molN The slope is negative because we're mcasuring the disappearance of HI, but when its value is used as a rate of 0.04 110s- reaction, we express the rate as positive. 0,03 0.02 0.01 0 C 50 100 150 200 250 300 350 400 Time (s) of reaction

Answer 1

HI H,+ I2 TE KEHIT ate: -4 HIJ 04 at Yeedt HIat

Rate at minute Cl20se THIJE 0F o Mal CHIJ O.053 mot t-20s - o mel fate .a-50.0] 120s-Ds 120s 3.9K10 melL'S Rate at 250 See CHE2c0s O035 250 Tate -O035-01usl O.065 miel 2-6xlo s 250