Consider the balanced chemical equation. Submit Request Answer H2O2(aq) + 31- (aq) + 2H+(aq) → I3 (aq) + 2H20(1) In the first 12.0 s of the reaction, the concentration of I drops from 1.000 M to 0.773 M. Part B You may want to reference (Pages 587 -592) Section 14.3 while completing this problem. Predict the rate of change in the concentration of I3 (A[I3]/At). Express the rate to three significant figures and include the appropriate units. A[[3 ]/At = Value Units

Consider the following data showing the initial rate of a reaction (A→products) at several different concentrations of A. [A](M) Initial rate (M/s) 0.15 0.014 0.30 0.055 0.60 0.220 You may want to reference (Page) Section 14.3 while completing this problem.

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> A Moving to another question will save this response. estion 19 Consider the reaction in aqueous solution: 3r + S20g2- → 13 + 2 SO42- Under a given set of conditions, the concentration of 13 changes from 0,0 M to 7,6 x 10-4 M in 20 seconds. Calculate A[SO2yAt (in mol/L-s) for this time interval. O -6.5 x 10-5 mol/L-s O 5.0 x 10-5 mol/L·s O 1.2 x 10-5 mol/L·s O 7.6 × 10-5 mol/L·s O -5.0 x 105 mol/L-s A Moving to another question will save this response. MacBook Air F6 F5 吕口 F4 F3 F2 F1 #3 24 % 7 6. 4. 2 00

7. The rate of the endothermic reaction, H2CO3(aq)→H2O(l)+CO2(g), using 1.00 M H2CO3, can be increased by adding more water to the reactant boiling the water doubling the quantity of 1.00 M H2CO3 a. I only b. II only c. III only d. II and III only

Use the information given in the following paragraph and energy diagram to answer questions 5-10. The mechanism for the reaction 2A D is illustrated in the following energy diagram where the X- axis is "reaction progress" and the Y-axis is "enthalpy". A is the reactant and D is the product. The reaction has a rate constant of 5.0x102² Mr¹ sec" when no catalyst is present. The equilibrium constant for the overall reaction at 25°C is K [D] = -=1.1×102. [A]² R D 9. You proposed the following mechanism for the overall reaction 2A D based on the energy diagram Step 1. A B (slow), with forward rate constant, k₂ (fast equilibrium), with forward rate constant, k₁, reverse rate constant k.] and equilibrium constant, K₁. Step 2. B 2C Step 3. A+2C D (fast), with forward rate constant, k3 Your classmate pointed out that your mechanism is incorrect. Why is your mechanism incorrect? a. Your mechanism does not incorporate the use of a catalyst b. Your mechanism is not consistent with the experimental…

At 40^0c, H202 (aq) will decompose according to the foll. reaction: 2 H202 (aq) ----2H20(l) +02 (g) The foll. data were collected for the concentration of h202 at various times. Time.                    [H202] (mol/L) 0.                           1.600 3.10*10^4              0.592 6.20*10^4.            0.219 (a) Calculate the average rate of decomposition in H202 between0 and 3.10 * 10^4 s. use this rate to calculate the average rate of production 02 (g) over the same time period. (b) What are these rates for the time period 3.10*10^4 s. to 6.20 *10^4 s.? Rate of H202 decomposition Rate of O2 Production

A solution of 2.292 X 10-9 M HCl is __________.     acidic     basic     neutral     cannot be determined from information given Which of the following is the equation for the reaction rate in terms of the change of concentration with respect to time for a reactant? 2 NO (g)     +     2 H2 (g)    →     N2 (g)   +    2 H2O (g)     Rate = k [NO] [H2]     Rate = - [H2] / 2 t     Rate = ([NO]2 [H2]2) / [N2]     Rate = k [NO]2 [H2]     Rate = [N2] / t

400 300 + energy 200 - (kJ/mol) с +D 100 A + В reaction coordinate Use the energy diagram to answer these questions. I KJ/mol What is the heat of reaction? Exothermic Is the reaction exothermic or endothermic? Endothermic Neither Yes, it's kJ/mol Can you determine the activation energy? No. Can you determine the activation energy of the reverse reaction? Yes, it's kJ/mol С+D- A+B No.