The reaction of the persulfate ion with the iodine ion at room temperature is: S2O82-...

The reaction of the persulfate ion with the iodine ion at room temperature is:

S₂O₈^2- + 2 I^- ↔ 2 SO₄^2- + I₂ , so rate = k [S₂O₈^2-]^x [I^-]^y

The following data was collected at room temperature:

Experiment	[S₂O₈^2-] (M)	[I^-] (M)	Initial Rate (M/s)
1	0.10	0.15	2.61 x 10^-5
2	0.20	0.15	5.21 x 10^-5
3	0.10	0.30	5.24 x 10^-5

Determine the following:

(a) The rate law (including exponents for S₂O₈^2- and I^-)

(b) The rate constant, k

Expert Solution

queen_honey_blossom answered 1 year ago

Iodine clock reaction lab 2I-(aq) + S2O82-(aq)à I2(aq) + 2SO42- (aq) Rate=k[I-]x[S2O82-]y I need to calculate...

Iodine clock reaction lab 2I-(aq) + S2O82-(aq)à I2(aq) + 2SO42- (aq) Rate=k[I-]x[S2O82-]y I need to calculate the initcial concentrations of I- and S2O8^2- then use that to calculate the reaction rate M/sec and the k value. Run Number 3% Starch 0.012 Na2S2O3 mL 0.20 M KI mL 0.20 M KNO3 mL 0.20 M (NH4)2SO4 mL 0.20 M (NH4)2S2O8 mL Total= 2 mL Time sec 1 2 drops 0.200 0.800 0.200 0.400 0.400 2.00 35.75 2 2 drops 0.200 0.400 0.600...

Two aqueous solutions are at room temperature and are mixed in a coffee calorimeter. The reaction...

Two aqueous solutions are at room temperature and are mixed in a coffee calorimeter. The reaction causes the temperature of the resulting solution to fall below room temperature. Whicch statement is true? A) This type of experiment provides data to calculate deltaErxn B)Energy is leaving the system during reaction C)The products have a lower potential energy than the reactants D) The reaction is exothermic E)None of the above is true

For the reaction A + B 2C, Kc = 1.7 x 10?3 at room temperature If...

For the reaction A + B 2C, Kc = 1.7 x 10?3 at room temperature If the initial concentration of A = 2.24 M, B = 0.56 M, what is the equilibrium concentration of C? *Do you need to use the quadratic equation or can you assume that x is negligible?*

(i) The unbalanced chemical equation for the reaction to form Ag2[Cr2O7] is Cr3+ + S2O82- +H2O...

(i) The unbalanced chemical equation for the reaction to form Ag2[Cr2O7] is Cr3+ + S2O82- +H2O + AgNO3 → Ag2[Cr2O7] + SO42- + H+ + NO3- Balance the equation and determine which atoms were oxidised and which were reduced in the reaction. (ii) The unbalanced chemical equation for the reaction to form K3Cr(O2)4 is K2CrO4 + H2O2 + KOH → K3Cr(O2)4 + H2O Balance the equation. Show which atoms were oxidised and which atoms were reduced.

At a temp below room temp but with all components as gases, the decomposition of iodine...

At a temp below room temp but with all components as gases, the decomposition of iodine monochloride, ICl, to iodine and chlorine, is 1.4*10^-5 2ICl (g)----> I2 (g) + Cl2 (g) If a sealed vessel has [ICl]=1.87 M, and no iodine or chlorine. What are the equilibrium cocentrations?

Boil water in a bowl and cool in a room. The air temperature in the room...

Boil water in a bowl and cool in a room. The air temperature in the room is increasing linearly according to the function Ta (t) = 22 + 0.015t (t in minutes, T in ° C). Assume that Newton's Law of Cooling is satisfied: the rate of change of water temperature is proportional to the difference between the temperature of the water and the temperature of the environment. We take the water temperature after 8 minutes and find that it...

Peas Rate of respiration Germinating, room temperature 296.1 Non-germinating, room temperature 2.122 Germinating, cool temperature 252.8...

Peas Rate of respiration Germinating, room temperature 296.1 Non-germinating, room temperature 2.122 Germinating, cool temperature 252.8 1. Compare the respiration rate among various types of seeds. 2. Compare the respiration rate among seeds that have germinated for different time periods, such as 1, 3 and 5 days

If we want to only use frozen water (ice) and room temperature water (room temperature water...

If we want to only use frozen water (ice) and room temperature water (room temperature water of four times the mass of the ice), write out the various forms of heat transfer that will occur between frozen water and room temperature water, when the come into contact. Hint: There will be one term of heat transfer from the room temperature water, and three terms of heat transfer in the ice/cold water.

Iron (III) ion and thiocyanate ion exists in equilibrium with iron thiocyanate ion. The reaction, as...

Iron (III) ion and thiocyanate ion exists in equilibrium with iron thiocyanate ion. The reaction, as written, is exothermic. Given that the FeNCS2+ product is a deep red color and the reactants are nearly colorless, which of the following will cause the solution to bedarker in color at equilibrium? Fe3+(aq) + NCS–(aq) ↔ FeNCS2+(aq) Increasing the solution temperature Adding FeNO3 Removing Fe3+ ion by adding NaOH which reacts with Fe3+ ion. Removing NCS– ion by adding AgNO3 with reactacts with...

An uncatalyzed reaction has a rate of 4.4 x 10-7 s–1 at room temperature (25 °C)....

An uncatalyzed reaction has a rate of 4.4 x 10-7 s–1 at room temperature (25 °C). When an enzyme is added the rate is 3.3 x 104 s–1. If the height of the activation barrier for the uncatalyzed rate is 28 kcal/mol, what is the height of the activation barrier for the catalyzed rate? Report your answer in terms of kcal/mol to the nearest tenths. Also, assume the pre-exponential terms for the uncatalyzed and catalyzed reactions are the same.

Question