Question

please help with parts a-c

(a) (3 pts) Shown below is plot of concentration as a function of time for the reaction A B. What is the value of the equilibrium constant (K) for this reaction? 190 30.000 0.040 A Concentration (M) 0020 6000 1.00 3.00 0.00 (b) (4 pts.) The following pictures represent the equilibrium state for four different reactions of the type A, + x = 2 Ax (X-B, C, D, E) 2x A atoms are unshaded. X atoms are shaded. 8 00 A+ B, 2AB A, + C, 22AC A, + D, ZAD A, + E, ZAE Which reaction has the largest equilibrium constant? Explain your reasoning. (e) (7pts.) At a certain temperature the equilibrium constant, Kc, equals 0.110 for the reaction: 2 ICI (8)=L(g) +Ch (g) What is the equilibrium concentration of ICl if 0.750 mol of L2 and 0.750 mol of Ch are initially mixed in a 1.00-L flask?

Answer 1

Please see the attached image for your answer. All calculations were performed using a basic scientific calculator.
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a) ke, equilibrium constant for A Z B (BJ at steady-state CAT (when Conch becomes nearly constant) (6] ~ 0.500 M Į from CA] ñ 0.200 M graph after long time, Kc = 0.500M 2.50 b) let us assume y (A2) oo (x2) (AX) ke= [4x]² [A][X2 0 for first box At1 B2 > 1 38² 1x1 ABT 88 - 30264 box 2 A2 3 kez e 3 42 3x3 AC4 1.78 box 3 4. Kez - 22 D₂ 4 AD 2 4x4 = 0.25


box 4 62 Az - 2 E 2 AE 6 2x2 - 9 hence, based on pictorial representation, kc is highest for (A + B2 (ATB Ž 2AB) VC I C 214 (9) 0.75M e-27 (0.75-22) M Iz (g) + Cl (g) 0.75M ta (0.75+) M tn E η Μ 0.11 = ke = [ce] [12] Cace² 10.75+) (x) (0.75-2x) ² 0.11(0.5625 +424 -31) - 0.75a tal 0.06 18 75 +0.4402 -0.332 = 0.75nt n² 0.56n2 +1.082 -0.061875 =0 sowing, not valid («< 0.75) x = 0.056 or -1984 equilibrium conch of Ice = (0.75-2x) M (0.75-0.112) M 0.638 M