In iodine clock reaction, which factor has the greater effect? a. pH b. Peroxide c. Thiosulfate
In iodine clock reaction, which factor has the greater effect?
a. pH
b. Peroxide
c. Thiosulfate
Homework Answers
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In iodine clock reaction, which factor has the greater
effect?
a. pH
b. Peroxide
c. Thiosulfate
The reaction of iodine with thiosulfate is Select one: a. Sometimes slower, sometimes faster than the...
The reaction of iodine with thiosulfate is Select one: a. Sometimes slower, sometimes faster than the reaction of I- and bromate. b. Slower than the reaction of I- and bromate c. More rapid than the reaction of l- and bromate d. Similar in rate to the reaction of l- and bromate
The reaction of hydrogen peroxide with iodine, H2O2(aq)+I2(aq)?OH?(aq)+HIO(aq) is first order in H2O2 and first order...
The reaction of hydrogen peroxide with iodine, H2O2(aq)+I2(aq)?OH?(aq)+HIO(aq) is first order in H2O2 and first order in I2 . If the concentration of H2O2 was increased by half and the concentration of I2 was quadrupled, by what factor would the reaction rate increase?
4. [Problem 10-15, pp 332-333 in Hill.] The reaction between sodium thiosulfate and hydrogen peroxide in...
4. [Problem 10-15, pp 332-333 in Hill.] The reaction between sodium thiosulfate and hydrogen peroxide in aqueous solution 2 Na2S203 4 H202 Na2S30s Na2S042 H20 2A +4B → C + D +2W is characterized by a second-order rate expression, A = k CACB k = (2.00 x 1010) e-8200/T Umol-S. For a feed stream containing 0.4 mol/L of A and 0.6 moVL of B at 20°C, calculate the residence time necessary to achieve 60% conversion of A in: (a) an...
In the Iodination of Salicylamide, active iodine was created by the action of sodium hypochlorite on...
In the Iodination of Salicylamide, active iodine was created by the action of sodium hypochlorite on sodium iodide. When the reaction was complete, 10% sodium thiosulfate solution was added to the reaction mixture before acidification. What is the role of sodium thiosulfate in this procedure? A. It tests the pH of the mixture. B. It destroys excess sodium hypochlorite. C. It removes water from the organic layer. D. It protects salicylamide from the harsh acid. I have seen that the...
Student Name: Instructor Name: EXP #4: POST-LAB 1. A proposed mechanism for the iodine clock reaction...
Student Name: Instructor Name: EXP #4: POST-LAB 1. A proposed mechanism for the iodine clock reaction is shown below: Iodine Clock Reaction Mechanism: 1 HSoS0+HIO2 ki-2.95 x 10-1M-'s-1 2-2.0 x 1010 AM-2s-1 ka 1.0 x 105 M-'s-1 ka-3.0 x 105 M-3s-1 HIO2+I +H+2HOI HIO2+ HOI IO +I + 2H+ IO I+2H HIO2 + HOI HOI+I+H I2+H20 ks 3.0 x 1012M-2s-1 I+ H20 HOI+ I +H ke -2.2s-1 I2+HSO+H20+21 +SO- +3H+ -1.0 x 100 M-1-1 where the values of k are...
These coupled reactions are called an iodine clock reaction. Why? What are the factors that can...
These coupled reactions are called an iodine clock reaction. Why? What are the factors that can affect the rate of a chemical reaction? 1 The Lactas that ean aliect he ate of a chernical actom What interaction is responsible for the dark purple color? d. 2. For this experiment a Give the chemical equation for the reaction whose rate is being studied. e Why would the color change be so sudden not gradual? b. Give the chemical reaction that will...
Chemical Kinetics Kit for AP Chemistry Student Guide d. Is it likely that this reaction occurs...
Chemical Kinetics Kit for AP Chemistry Student Guide d. Is it likely that this reaction occurs in one step? Explain. 2. A student would like to determine the orders of the reaction for an iodine clock reaction that occurs in three steps 3r(aq)+ H,O:(aq) + 2H'(aq )-,(aq) +2H 2O0) slow I(aq) + 25,0,(aq) 3r(aq) + S40(aq) 21, (aq) + starch-starch-I" complex + r(aq) fast fast Write the rate law for this reaction, using variables in place of the exponents a...
Discussion Questions 1. Write the decomposition chemical reaction for the effect of catalase on hydrogen peroxide....
Discussion Questions 1. Write the decomposition chemical reaction for the effect of catalase on hydrogen peroxide. Indicate the substrate, the enzyme, and the products. Explain why this chemical reaction is an important biological function. 2. Each enzyme operates at an ideal pH and temperature, which may vary for other enzymes. (a) Pepsin is an enzyme found in the human stomach for digesting protein. What would be the optimum pH conditions for pepsin? What effect does entry into the intestines have...
answer the questions Experiment 1084-04: lodine Clock Reaction Purpose Determine the rate law for an iodine...
answer the questions
Experiment 1084-04: lodine Clock Reaction Purpose Determine the rate law for an iodine clock reaction and study the influence of st on that reaction abruptly that it can be as startling as the sudden sound of an alarm clock, hence the clock reaction Background Information chemical equations can be written for chemical reactions, only some will proceed while others do not. Among the ones that do proceed some reactions occur as soon as reactants are mixed, while...
1) The reaction of hydrogen peroxide with iodine, H2O2(aq)+I2(aq)⇌OH−(aq)+HIO(aq) is first order in H2O2 and first...
1) The reaction of hydrogen peroxide with iodine, H2O2(aq)+I2(aq)⇌OH−(aq)+HIO(aq) is first order in H2O2 and first order in I2. If the concentration of H2O2 was increased by half and the concentration of I2 was quadrupled, by what factor would the reaction rate increase? 2) Consider the following reaction: O3(g)→O2(g)+O(g) Using the results of the Arrhenius analysis (Ea=93.1kJ/mol and A=4.36×1011M⋅s−1), predict the rate constant at 298 K . 3. The rate constant of a chemical reaction increased from 0.100 s−1 to...
The reaction of iodine with thiosulfate is Select one: a. Sometimes slower, sometimes faster than the reaction of I- and bromate. b. Slower than the reaction of I- and bromate c. More rapid than the reaction of l- and bromate d. Similar in rate to the reaction of l- and bromate
4. [Problem 10-15, pp 332-333 in Hill.] The reaction between sodium thiosulfate and hydrogen peroxide in aqueous solution 2 Na2S203 4 H202 Na2S30s Na2S042 H20 2A +4B → C + D +2W is characterized by a second-order rate expression, A = k CACB k = (2.00 x 1010) e-8200/T Umol-S. For a feed stream containing 0.4 mol/L of A and 0.6 moVL of B at 20°C, calculate the residence time necessary to achieve 60% conversion of A in: (a) an...
Student Name: Instructor Name: EXP #4: POST-LAB 1. A proposed mechanism for the iodine clock reaction is shown below: Iodine Clock Reaction Mechanism: 1 HSoS0+HIO2 ki-2.95 x 10-1M-'s-1 2-2.0 x 1010 AM-2s-1 ka 1.0 x 105 M-'s-1 ka-3.0 x 105 M-3s-1 HIO2+I +H+2HOI HIO2+ HOI IO +I + 2H+ IO I+2H HIO2 + HOI HOI+I+H I2+H20 ks 3.0 x 1012M-2s-1 I+ H20 HOI+ I +H ke -2.2s-1 I2+HSO+H20+21 +SO- +3H+ -1.0 x 100 M-1-1 where the values of k are...
These coupled reactions are called an iodine clock reaction. Why? What are the factors that can affect the rate of a chemical reaction? 1 The Lactas that ean aliect he ate of a chernical actom What interaction is responsible for the dark purple color? d. 2. For this experiment a Give the chemical equation for the reaction whose rate is being studied. e Why would the color change be so sudden not gradual? b. Give the chemical reaction that will...
Chemical Kinetics Kit for AP Chemistry Student Guide d. Is it likely that this reaction occurs in one step? Explain. 2. A student would like to determine the orders of the reaction for an iodine clock reaction that occurs in three steps 3r(aq)+ H,O:(aq) + 2H'(aq )-,(aq) +2H 2O0) slow I(aq) + 25,0,(aq) 3r(aq) + S40(aq) 21, (aq) + starch-starch-I" complex + r(aq) fast fast Write the rate law for this reaction, using variables in place of the exponents a...
Discussion Questions 1. Write the decomposition chemical reaction for the effect of catalase on hydrogen peroxide. Indicate the substrate, the enzyme, and the products. Explain why this chemical reaction is an important biological function. 2. Each enzyme operates at an ideal pH and temperature, which may vary for other enzymes. (a) Pepsin is an enzyme found in the human stomach for digesting protein. What would be the optimum pH conditions for pepsin? What effect does entry into the intestines have...
answer the questions
Experiment 1084-04: lodine Clock Reaction Purpose Determine the rate law for an iodine clock reaction and study the influence of st on that reaction abruptly that it can be as startling as the sudden sound of an alarm clock, hence the clock reaction Background Information chemical equations can be written for chemical reactions, only some will proceed while others do not. Among the ones that do proceed some reactions occur as soon as reactants are mixed, while...
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