Indicate what a catalyst does in a reaction to change the reaction rate, and provide a...
Indicate what a catalyst does in a reaction to change the reaction rate, and provide a possible explanation for how Cu2+ acts as a catalyst in Kinetics of an Iodine Clock Reaction (non-reactive compounds KNO3 and (NH4)2SO4 are added to replace the reactants KI and (NH4)2S2O8) ).
Hint: The Cu2+ ion, added in the form of a dilute Cu(NO3)2 solution, makes a suitable catalyst.
Homework Answers
Catalyst decrease the activation energy of a reaction and as a result rate of the reaction increases.
In iodine clock reaction Iodine is oxidised to I2 and liberates two electron. If Cu^2+ is added to the solution, it can accept these two electrons to form Cu(s). Thus, in the process Cu is reduced.
Add Answer to:
Indicate what a catalyst does in a reaction to change the
reaction rate, and provide a...
L. 14/2004- 2. Categorize the chemical used during the reaction in today's experiment. Use the Word Bank to fill...
L. 14/2004- 2. Categorize the chemical used during the reaction in today's experiment. Use the Word Bank to fill in the blanks. Some answers can be used more than once. WORD BANK Starch | Na2S2O3 KI KNO3 (NH4)2S2O8 (NH4)2SO4 Two chemicals in the reaction of interest Reagent of the Clock Reaction The indicator Source of Keeps the ion concentration constant (two) BONUS (+1 Point) : THIS ANSWER IS NOT IN THE WORD BANK! Reacts with the indicator to turn the...
Questions on a pre lab for Kinetics: the Iodine Clock Reaction 2. How could one determine...
Questions on a pre lab for Kinetics: the Iodine Clock
Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
How do I calculate the Rate of Reaction and the Relative Rate of Reaction? 0.04M 0.1M...
How do I calculate the Rate of Reaction and the Relative Rate of
Reaction?
0.04M 0.1M Initial I Concentration Initial S2082- Concentration Show a calculation of how you calculated the rate of reaction Rate of Reaction Use M/s to represent (mol/L)/s Show a calculation of how you calculated the relative rate of reaction Relative Rate of Reaction Reaction 1 Save&Continue Time to Colour Change 948 Numeric answers include a number followed by units. Nothing else. Pay attention to precision. Use...
please provide proper explanation For part 3 - the effect of a catalyst : Time it took for the mixture to tu...
please provide proper explanation
For
part 3 - the effect of a catalyst : Time it took for the mixture to
turn blue when a catalyst wass added to reactants
Describe the effect of a catalyst below. Use the rate you
observed to back your description
We were unable to transcribe this imagePart 2: Determination of the Activation Energy: 1) In this section you will measure the rate of reaction at four different temperatures. To do this you'll use the...
What is the Balanced Chemical Equation? The FAS confuses me. please explain no 4 permanganate Experiment...
What is the Balanced Chemical Equation? The FAS confuses me.
please explain
no 4 permanganate Experiment 30 Oxidation-Reduction Titration and Analysis of an Unknown Mixture PURPOSE OY BXPERIMENT: Standardizo a solution of Kno4, and determine the percent by mass of Na2C204 in an unknown mixture. The process of titration may be used for the standardization of solu- tions of oxidizing and/or reducing agents, provided a suitable method for observing the andpoint of the reaction is available. When potassium peran- ganata,...
15. The mixing of which pair of reactants will result in a precipitation reaction? CsI(aq)...
15. The mixing of which pair of reactants will result in a precipitation reaction? CsI(aq) + NaOH(aq) HCl(aq) + Ca(OH)2(aq) K2SO4(aq) + Hg2(NO3)2(aq) NaNO3(aq) + NH4Cl(aq) 16. Which of the following is a precipitation reaction? Zn(s) + 2 AgNO3(aq) 2 Ag(s) + Zn(NO3)2(aq) NaCl(aq) + LiI(aq) NaI(aq) + LiCl(aq) 2 KI(aq) + Hg2(NO3)2(aq) Hg2I2(s) + 2 KNO3(aq) HI(aq) + NaOH(aq) NaI(aq) + H2O(l) None of these are precipitation reactions. 17. Which...
Please answer all multiple choice All questions need to be answered! Questions 1-20 are multiple choice...
Please answer all multiple choice
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questions need to be answered!
Questions 1-20 are multiple choice questions. Please mark the correct circle on the Scantron form. Only the Scantron form will be graded. Scantron must be filled in before time is called Which of the following acids is not a strong acid? 5 HI b. HBr to SEHNO, HF HESO. Venter 2. Which of the following is an example of an empirical formula: a Cs Ho HO LP Fea(SO) d)...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is to learn how to use a separatory funnel to extract a single component away from other compounds in solution. To do so, we will apply the principles of solubility and acid-base behavior you’re seeing in class. One of the compounds is neutral in the acid-base sense. It has no ability to either donate or accept a proton from an aqueous solution, and will remain...
L. 14/2004- 2. Categorize the chemical used during the reaction in today's experiment. Use the Word Bank to fill in the blanks. Some answers can be used more than once. WORD BANK Starch | Na2S2O3 KI KNO3 (NH4)2S2O8 (NH4)2SO4 Two chemicals in the reaction of interest Reagent of the Clock Reaction The indicator Source of Keeps the ion concentration constant (two) BONUS (+1 Point) : THIS ANSWER IS NOT IN THE WORD BANK! Reacts with the indicator to turn the...
Questions on a pre lab for Kinetics: the Iodine Clock
Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
How do I calculate the Rate of Reaction and the Relative Rate of
Reaction?
0.04M 0.1M Initial I Concentration Initial S2082- Concentration Show a calculation of how you calculated the rate of reaction Rate of Reaction Use M/s to represent (mol/L)/s Show a calculation of how you calculated the relative rate of reaction Relative Rate of Reaction Reaction 1 Save&Continue Time to Colour Change 948 Numeric answers include a number followed by units. Nothing else. Pay attention to precision. Use...
please provide proper explanation
For
part 3 - the effect of a catalyst : Time it took for the mixture to
turn blue when a catalyst wass added to reactants
Describe the effect of a catalyst below. Use the rate you
observed to back your description
We were unable to transcribe this imagePart 2: Determination of the Activation Energy: 1) In this section you will measure the rate of reaction at four different temperatures. To do this you'll use the...
What is the Balanced Chemical Equation? The FAS confuses me.
please explain
no 4 permanganate Experiment 30 Oxidation-Reduction Titration and Analysis of an Unknown Mixture PURPOSE OY BXPERIMENT: Standardizo a solution of Kno4, and determine the percent by mass of Na2C204 in an unknown mixture. The process of titration may be used for the standardization of solu- tions of oxidizing and/or reducing agents, provided a suitable method for observing the andpoint of the reaction is available. When potassium peran- ganata,...
Please answer all multiple choice
All
questions need to be answered!
Questions 1-20 are multiple choice questions. Please mark the correct circle on the Scantron form. Only the Scantron form will be graded. Scantron must be filled in before time is called Which of the following acids is not a strong acid? 5 HI b. HBr to SEHNO, HF HESO. Venter 2. Which of the following is an example of an empirical formula: a Cs Ho HO LP Fea(SO) d)...
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