Homework Answers
1)
Order of a rate law is the sum of the exponents of its
concentration terms.
Reaction order depends reactants.
Rate = k[A]x[B]y
Order, n = x+y
In zero-order reaction, rate is independent of the concentration of a particular reactant.
2)
Concentration affects the rate of reaction but it doesn't depend
rate constant.
Rate constant will not change according to concentration.
Increasing the rate does not increase the rate constant.
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Suppose the sample of h202 used in this experiment is old and the concentration is lower...
Name Desk Date _Laboratory Instructor 30 Pre-lab Questions Rates of Chemical Reactions II: Rate and Order...
Name Desk Date _Laboratory Instructor 30 Pre-lab Questions Rates of Chemical Reactions II: Rate and Order of H2O2 Decomposition Before beginning this experiment in the laboratory, you should be able to answer the following questions. 1. What four factors may influence the rate of a reaction? 2. Assume that the rate law for a reaction is rate=AB. a) What is the overall order of the reaction? (b) If the concentration of both A and B are doubled, how will this...
QUESTION 14 2NO (g) +Cl2 (g) → NOCl (g) Experiment concentration of NO (M) concentration of...
QUESTION 14 2NO (g) +Cl2 (g) → NOCl (g) Experiment concentration of NO (M) concentration of Cl2(M) Rate (M/s) 1 0.09 0.04 3.40 x 10-4 2 0.045 0.04 8.50 x 10-5 3 0.045 0.16 3.40 x 10-4 What is the reaction order with respect to NO ? the reaction order with respect to reaction order to Cl2 ? overall reaction order ? what is the rate constant ? * All orders are integers * Rate constant: Please report 3 significant figures. Numbers only,...
Assessing Some Possible Determinate Errors 1. One source of determinate error in this experiment would be...
Assessing Some Possible Determinate Errors 1. One source of determinate error in this experiment would be in determining the temperature of the gas in the buret. Based on the temperature of the reaction mixture in the flask before and after reaction, is the reaction exothermic or endothermie? Describe how this temperature change would affect the volume of the gas collected in the buret, and the calculated value of the gas constant. (1 mark) Explain how the calculated value of the...
1) An experiment is run with enzyme E at a constant concentration of 1.00 nM. The...
1) An experiment is run with enzyme E at a constant concentration of 1.00 nM. The following data set was generated: Initial rate v, [SJ, μΜ μΜ/min 2.0 2.9 3.0 3.8 4.0 4.4 5.0 5.0 5.4 6.0 7.0 5.8 8.0 6.2 9.0 6.4 6.7 10.0 From these data, determine Vmax, KM, kcat and the turnover number. In a second series of experiment, the reaction was studied in the presence of 10mM of inhibitor A. The new data set is shown...
64 Experiment 9 Titration of an Acid with a Base QUESTIONS PRE LAB 1. How would the calculated concentration of the...
64 Experiment 9 Titration of an Acid with a Base QUESTIONS PRE LAB 1. How would the calculated concentration of the HCl be affected, if the sodium hydroxide were poured from a beaker that contained some water before the NaOH were added to it? 2. What color is phenolphthalein in acid? What color is it in base? 3. The acid and base in this experiment are completely harmless-True or False? Explain your answer.
Find the molar mass of the unknown compound given the following information: A 1.216 g sample...
Find the molar mass of the unknown compound given the following information: A 1.216 g sample of an unknown compound was dissolved in 8.379 g of BHT BHT is a non-polar solvent with a k, = 6.83°C/m. The freezing point depression (AT) was measured as 3.30'C. Useful information AT, = Kim Hint: sole for molality and then use the mass of the solvent to find the number of moles of solute. If the rate constant for the reaction below is...
1) 2) 3) 2NO(g) +Cl2 (g) → NOCI (8) Experiment concentration of NO (M) 0.09 0.045...
1)
2)
3)
2NO(g) +Cl2 (g) → NOCI (8) Experiment concentration of NO (M) 0.09 0.045 0.045 concentration of Cl2(M) Rate (M/s) 0.01 3.40 x 10-4 8.50 x 10-5 0.04 3.40 x 10-4 0.01 What is the reaction order with respect to NO to Cl2 ? overall reaction order ? the reaction order with respect to reaction order ? what is the rate constant * All orders are integers * Rate constant: Please report 3 significant figures. Numbers only, No...
I don't know how to reach the answer for (b) which is and need help with (a) and (c) as well. A gas phase reaction...
I don't know how to reach the
answer for (b) which is and need help with (a) and (c)
as well.
A gas phase reaction proceeded by way of two parallel first order reactions as shown below: i) CH,CООН — СHa + CO2 ii Н,С-С-0 + H-0 CH,COОН In an experiment conducted at 450 °C the concentration of acetic acid was followed as а) a function of time. Describe how to use the data collected to find the rate constant...
Uncatalyzed Catalyzed Enzyme-substrate Complex In the above reaction, the lower curve is an enzyme-catalyzed reaction where...
Uncatalyzed Catalyzed Enzyme-substrate Complex In the above reaction, the lower curve is an enzyme-catalyzed reaction where the activation energy is notably lower than the uncatalyzed reaction. Suppose the enzyme in the diagram was mutated in such a way that its affinity for the substrate increased 100 fold, thereby affecting the enzyme-substrate complex portion of the curve. Assume that there was no other effect. Would you expect the reaction rate catalyzed by the altered enzyme to be faster, slower, or equal...
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...
Name Desk Date _Laboratory Instructor 30 Pre-lab Questions Rates of Chemical Reactions II: Rate and Order of H2O2 Decomposition Before beginning this experiment in the laboratory, you should be able to answer the following questions. 1. What four factors may influence the rate of a reaction? 2. Assume that the rate law for a reaction is rate=AB. a) What is the overall order of the reaction? (b) If the concentration of both A and B are doubled, how will this...
Assessing Some Possible Determinate Errors 1. One source of determinate error in this experiment would be in determining the temperature of the gas in the buret. Based on the temperature of the reaction mixture in the flask before and after reaction, is the reaction exothermic or endothermie? Describe how this temperature change would affect the volume of the gas collected in the buret, and the calculated value of the gas constant. (1 mark) Explain how the calculated value of the...
1) An experiment is run with enzyme E at a constant concentration of 1.00 nM. The following data set was generated: Initial rate v, [SJ, μΜ μΜ/min 2.0 2.9 3.0 3.8 4.0 4.4 5.0 5.0 5.4 6.0 7.0 5.8 8.0 6.2 9.0 6.4 6.7 10.0 From these data, determine Vmax, KM, kcat and the turnover number. In a second series of experiment, the reaction was studied in the presence of 10mM of inhibitor A. The new data set is shown...
64 Experiment 9 Titration of an Acid with a Base QUESTIONS PRE LAB 1. How would the calculated concentration of the HCl be affected, if the sodium hydroxide were poured from a beaker that contained some water before the NaOH were added to it? 2. What color is phenolphthalein in acid? What color is it in base? 3. The acid and base in this experiment are completely harmless-True or False? Explain your answer.
Find the molar mass of the unknown compound given the following information: A 1.216 g sample of an unknown compound was dissolved in 8.379 g of BHT BHT is a non-polar solvent with a k, = 6.83°C/m. The freezing point depression (AT) was measured as 3.30'C. Useful information AT, = Kim Hint: sole for molality and then use the mass of the solvent to find the number of moles of solute. If the rate constant for the reaction below is...
1)
2)
3)
2NO(g) +Cl2 (g) → NOCI (8) Experiment concentration of NO (M) 0.09 0.045 0.045 concentration of Cl2(M) Rate (M/s) 0.01 3.40 x 10-4 8.50 x 10-5 0.04 3.40 x 10-4 0.01 What is the reaction order with respect to NO to Cl2 ? overall reaction order ? the reaction order with respect to reaction order ? what is the rate constant * All orders are integers * Rate constant: Please report 3 significant figures. Numbers only, No...
I don't know how to reach the
answer for (b) which is and need help with (a) and (c)
as well.
A gas phase reaction proceeded by way of two parallel first order reactions as shown below: i) CH,CООН — СHa + CO2 ii Н,С-С-0 + H-0 CH,COОН In an experiment conducted at 450 °C the concentration of acetic acid was followed as а) a function of time. Describe how to use the data collected to find the rate constant...
Uncatalyzed Catalyzed Enzyme-substrate Complex In the above reaction, the lower curve is an enzyme-catalyzed reaction where the activation energy is notably lower than the uncatalyzed reaction. Suppose the enzyme in the diagram was mutated in such a way that its affinity for the substrate increased 100 fold, thereby affecting the enzyme-substrate complex portion of the curve. Assume that there was no other effect. Would you expect the reaction rate catalyzed by the altered enzyme to be faster, slower, or equal...
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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