Question

16. Determine the rate law for the following data: [CJ (M) [B] (M) [A] (M) 1.00 1.00 1.00 6.25 2.00 1.00 1.00 Initial Rate 1.00 6.25 1.00 12.5 1.00 2.00 25.0 2.00 1.00 A. Rate 6.25M-3s-1 [A]1 [B] 2 [C]3 B. Rate = 12.5 M-2s-1 [B]1 [C12 C. Rate 12.5M-2s-1 [A]°[B] [C]2 D. Rate 6.25M-2s -1 [B]1 [C] 2 E. There is not enough information to solve. L 17. You are building a machine to make pasta sauce from tomatoes and other things. This machine cannot corrode into your pasta sauce, or the taste of the sauce will be ruined - as will the machine. The tomatoes you are using have a natural pH of 4.5 to 4.8. Which anion would you choose to make a buffer solution to test parts and materials for your machine? Acid Ка Hydrochloric HCl Acetic CH3COOH Carbonic H2CO3 Dihydrogen phosphate H2PO4 Boric Acid H3BO3 1.8 x 10 4.3 x 10 6.2x 10 5.4 x 10 T0 A. CI В. СН,СОО" С. НСОЗ D. HPO2- Е. Н.ВО3

Answer both please!

Answer 1

16) Rate law: Rate = k[A]'[BP[C]_ Here, z is the order of the reaction w.r.t A is the order of the reaction w.rt B z is the order of the reaction w.rt C Experiment 1: 6.25 M/s = k(1.00) (1.00)' (1.00) Experiment 2: 6.25 M/s = k(2.00) (1.00' (1.00) Experiment 3: 12.5 M/s = k(1.00)* (2.00)' (1.00)* --1 --2 ---3 --4 Experiment 4 25.0 M/s = k(1.00)' (1.00' (2.00)* Divi de the 2 reaction by the 1 to get the value of x (2.00) (100(L00 (1.00) (L00(100 1-(2) 2= ( 2)* 6.25 Ms 6.25Ms = x0 Hence, the order of the reaction wr.t Ais 0 Divi de the 3d reacti on by the 1 to get the value of y (100) (2.00 (L00 (LO0 (1.00 (L0 12.5Ms 6.25MS 2=(2) = (2) y 1 Hence, the order of the reaction wr t B is 1 Divi de the 4 reaction by the 1 to get the value of z (1,00)(100 (200)* (1.00) (0) (1.00)* 25.0 MS 6.25Ms 4=( 2)* 22 2 z 2 Hence, the order of the reacti on wr.t Cis 2 Rate *[A[BJIC = *[B][Cf Therefore, the rate law is Experiment 1: 6.25 M/s = k(1.00) (1.00)' (1.00 Rate law Rate k [B] [C] Rate Rate constant, B]CF 6.25M/s (1.00 M) 1.00 M) = 6.25 Ms E) Rate law: Rate k[B][C (6.25 M1)BCf (6.25 M1)BC