Unit 11 Discussion Questions Crib

Unit 11 Discussion Questions Crib - CHEM 614 Unit 11 Crib...

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Unformatted text preview: CHEM 614 Unit 11 Crib Discussion Questions 1) Write the rate expressions for the following reactions in terms of the disappearance of each reactant and the appearance of each product. a) H 2 (g) + I 2 (g) b 2HI(g) gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ ­ ® ¯ ° ∆±­ ® ² ∆¤ gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ ³ ® ¯ ° ∆±³ ® ² ∆¤ gG¡¢g£¡ ¢g¤¡ g¨¨¡g¢g©ª¡ «¬ ­³ ¯ ´ ∆±­³² ∆¤ b) 5Br- (aq) + BrO 3- (aq) + 6H + (aq) b Br 2 (aq) + 3H 2 O(l) gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ µ¢ ¶ ¯ ° ∆±µ¢ ¶ ² ∆¤ gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ µ¢· ¸ ¶ ¯ ° ∆±µ¢· ¸ ¶ ² ∆¤ gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ ­ ¹ ¯ ° ∆±­ ¹ ² ∆¤ gG¡¢g£¡ ¢g¤¡ g¨¨¡g¢g©ª¡ «¬ µ¢ ® ¯ ´ ∆±µ¢ ® ² ∆¤ gG¡¢g£¡ ¢g¤¡ g¨¨¡g¢g©ª¡ «¬ ­ ® · ¯ ´ ∆±­ ® ·² ∆¤ 2) a) When the reaction 2HI(g) b H 2 (g) + I 2 (g) was carried out at a high temperature, the concentration of HI decreased from 6.00 mM to 4.20 mM in 200 s. What was the average rate of this reaction? gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ ­³ ¯ ° ∆±­³² ∆¤ = ° º.®» ¼½¶¾.»» ¼½ ®»» §¶» § = ° ¶¿.À» ¼½ ®»» § = 9.00 x 10-3 mM s-1 b) Hemoglobin (Hb) carries oxygen through the body by forming a complex with it: Hb(aq) + O 2 (aq) b HbO 2 (aq) In a solution exposed to oxygen, the concentration of hemoglobin fell from 1.2 x 10-6 mM to 8.0 x 10-7 mM in 0.10 μ s. What was the average rate at which the hemoglobin reacted with oxygen in that solution, in mM μ s-1 ? gG¡¢g£¡ ¢g¤¡ ¥¦§g¨¨¡g¢g©ª¡ «¬ ­Á ¯ ° ∆±­Á² ∆¤ = ° À.»  ¿» ÃÄ ¼½¶¿.®  ¿» ÃÅ ¼½ ».¿» Ƨ¶» Ƨ = ° ¶¿.¿®  ¿» ÃÅ ¼½ ».¿» Ƨ = 1.12 x 10-4 mM Æ s-1 3) The following data were collected for the decomposition of A: 2A b 4B + C Time, (s) [A], (mM) 0 2.57 400 1.50 800 0.87 1200 0.51 1600 0.30 a) Determine the average rate of reaction during these time intervals: i) 0 to 800 s Rate of disappearance of A =...
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