1/T Ink

74x10+8 0.100 M, calculate the 104&the inale A + B 2C K = 1.0x103 If the observed concentrations at time t are all 0.100 M, will the reaction from that point on proceed to products or reactants? If the observed concentrations at time t are 0.400 M A, 0.500 M B and 0.0100 M C, will the reaction from that point on proceed to products or reactants? to enoiletineonoo muhdiliupe erlt etsluols M 00 s8 & A to O bns 8 A noitsineono lsitini edi 80xes.r=

Dinitrogen tetraoxide partially decomposes according to the following equilibrium: N2Oatg) 2NO219) A 1.00L flask is charged with 0.479 moles of N204. At equilibrium at 380K, 0.176 moles of N204 remains. K. for this reaction is Write your answer to 3 Sig Figs (ie. 1.23EO)

Consider the quilibrium reaction between X and Y, as shown below: X=Y AG The reaction is started with 10 mmol of X; no Y is initially present. After 48 hours, analysis reveals the presence of 10 mmol of X and 0 mmol of Y. Which is the most likely explanation? = −1 - 45 kJ mol X and Y have reached equilibrium concentrations. An enzyme has shifted the equilibrium toward X. Formation of Y is kinetically slow; equilibrium has not been reached by 48 hours. Formation of Y is thermodynamically unfavorable. Two of the above explanations are reasonable.

6:32 PM Sun Feb 5 How long will it take for the concentration of A to decrease from 0.910 M to 0.483 for the reaction A → Products? (k = 0.153 M/S) Tap here or pull up for additional resources 38 1 n @ 2 W #3 F 4 R 45 Question 34 of 50 % < 6 & 7 * CO 8 1 4 7 +/- 9

A reaction mixture is made of initial: [PCl5] = 0.210 M, [PCl3] = 0.0900 M, [Cl2] = 0.0900M In which direction will the reaction proceed to reach eqºm? Q = ------ = _____Mx______M/_______M > ? < K = 0.042M shifts? If [PCl5]eq = 0.2065 M, find all [conc]eq in this reaction mixture. Set up an ICE table:   [PCl5]  [PCl3]  [Cl2]  Init  Change  Eqºm  [PCl5]eq = 0.2065 M = _______   x = _______ M [PCl3]eq = ___________ = _______ M  [Cl2]eq = _______ M

A. Consider the endothermic reaction at 25oC: FeSCN+2(aq) --><-- Fe+3(aq) + SCN-(aq) What direction will the reaction shift in response to the following stresses? (Use arrows or write "right" , "left" , or "no shift").  a. More SCN- is added.  b. Solid sodium hydroxide is added. (iron (III) hydroxide is insoluble). c. The reaction container is set into ice water to cool. d. The pressure of the air around the reaction is doubled. e. Solid iron (III) chloride (FeCl3) is added. B. At 25oC, Kc for thr above reaction is 9.1 x 10-6. Determine the equilibrium concentration of Fe+3 in the solution if 0.50 mol of FeSCN+2 is dissolved to make 2.50 liters of solution.