1. What effect does consentration have on the reaction rate? 2. what would you predict for...
1. What effect does consentration have on the reaction rate?
2. what would you predict for the rate if 2.5 ml of water were mixed with 2.5 ml of the potassium iodate solution then 2 ml of the sodium meta-bisulfite/starch solution were added? pleas explain how you arrived at your nswear?
Homework Answers
1. Effect of concentration on rate:-
Rate of a reaction is directly proportional to some powers of reactant concentration as per rate law.
If concentration of reactants increase then rate of reaction increase for all reaction except for zero order reactions where rate is concentration independent.
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1. What effect does consentration have on the reaction rate?
2. what would you predict for...
Post Lab Questions what is the purpose of glacial acetic acid in this reaction? (5 points)...
Post Lab Questions what is the purpose of glacial acetic acid in this reaction? (5 points) 2. How does KI-starch paper work? What is the source of the dark color 3. What is the purpose of adding saturated aqueous sodium bisult What reaction is taking place? Write out the bar my saturated aqueous sodium bisulfite to the reaction mixture? is taking place? Write out the balanced equation for this reaction. Why do you e kl-starch paper test after adding the...
POST-LAB STUDY QUESTIONS 1. What would be the effect of carrying out Reaction 1 with concentrated...
POST-LAB STUDY QUESTIONS 1. What would be the effect of carrying out Reaction 1 with concentrated sodium iodide solution? 2. Why does sodium or potassium iodide replace chlorine or bromine atoms in S2 reactions? Explain your reasoning. 3. What would happen if the anhydrous acetone erroneously contained water? 4. Why does the reaction of bromide ion with 1-butanol require a strong acid to complete substitution? Use a chemical equation. 5. Draw out the general mechanisms for S 1 and 2...
A 0.1358-g portion of potassium iodate (MW 214.00), about 2 g of potassium iodide, and 2...
A 0.1358-g portion of potassium iodate (MW 214.00), about 2 g of potassium iodide, and 2 mL of 6 M hydrochloric acid were dissolved in 25 mL of distilled water. The triiodide formed during the ensuring reaction was titrated to the starch endpoint with 31.94 mL of a thiosulfate solution. A 25.00-mL triiodide sample solution was titrated to the endpoint with 21.33 mL of the standardized thiosulfate solution. Calculate the concentrations of the thiosulfate solution and the triiodide solution.
How do I calculate the isolated moles and molarity of the 0.2M KIO3?
how do I calculate the isolated moles and molarity
of the 0.2M
KIO3?
0.1 M Sulfuric Distilled Solution A Mixturel Mixture II Mixture III Mixture IV 0.20 M KIO3 Solution 5 mL 5 mL 10 mL 10 mL Acid 0 mL 0.5 mL 0 mL 0.5 mL water 15 ml 14.5mL 10 mL 9.5 mL Lalculations: I. (6pt) Calculate the total number of moles of iodate ion present in each 0.2 M KlO3 solution. Calculate the molarity of iodate ion...
Need help with the following questions: -What experimental observation will you use to determine the end...
Need help with the following questions:
-What experimental observation will you use to determine the
end of the reaction in Parts A and B?
-What reaction takes place in Parts A and B to produce the
observation you gave as a response to Question 3?
-What are the sources of the IO3- reactant and the HSO3-
reactant in Parts A and B?
- How do you measure the amounts of reactant solutions used in
Parts A and B?
-What are...
6) What would you observe in each of the following cases and provide an explanation. a)...
6) What would you observe in each of the following cases and provide an explanation. a) A dilute solution of iodine is added to an aqueous solution of starch. b) The solution is placed in boiling water. c) The solution is cooled in running water. d) An aqueous starch solution is treated with Fehling's solution and placed in boiling water. Would you expect the result to be the same as that for D- glucose? Explain. e) A stock solution of...
2. In this experiment you will quantitatively measure a reaction rate of 5,0 2. with I...
2. In this experiment you will quantitatively measure a reaction rate of 5,0 2. with I in solu- tion to produce I, according to the following reaction: 5,0,- +21 slow -> 1, +2 SO,2- The color change is very sudden and dramatic when 2 x 10+ mol of I, is produced. The time required to produce 2 x 10 mol of I, can be measured accurately. rate of reaction. A A S,01 ΔΕ ΔΙ a) Write the rate law for...
2) What chemical reaction does the titrant contribute to this experiment? CHEM 1A Experiment #8: Measuring the Vit...
2)
What chemical reaction does the titrant contribute to this
experiment?
CHEM 1A Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: Students will learn how to use a burette. Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. • Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a biological reducing agent. Introduction: Vitamin...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1,...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
A 0.5g sample of cement is added to a flask and is placed in a hot...
A 0.5g sample of cement is added to a flask and is placed in a hot water bath with ~20ml of ethylene glycol where it was mixed with a stir bar for 20 minutes. After 20 minute, the liquid was put through a vacuum filtration to collect the liquid. The filtrate was then transferred to another flask. To the filtrate, 3.00ml of 0.1M HCl was added. 50ml of 0.005M potassium iodate, and 0.5g of solid potassium iodide was also added...
Post Lab Questions what is the purpose of glacial acetic acid in this reaction? (5 points) 2. How does KI-starch paper work? What is the source of the dark color 3. What is the purpose of adding saturated aqueous sodium bisult What reaction is taking place? Write out the bar my saturated aqueous sodium bisulfite to the reaction mixture? is taking place? Write out the balanced equation for this reaction. Why do you e kl-starch paper test after adding the...
POST-LAB STUDY QUESTIONS 1. What would be the effect of carrying out Reaction 1 with concentrated sodium iodide solution? 2. Why does sodium or potassium iodide replace chlorine or bromine atoms in S2 reactions? Explain your reasoning. 3. What would happen if the anhydrous acetone erroneously contained water? 4. Why does the reaction of bromide ion with 1-butanol require a strong acid to complete substitution? Use a chemical equation. 5. Draw out the general mechanisms for S 1 and 2...
how do I calculate the isolated moles and molarity
of the 0.2M
KIO3?
0.1 M Sulfuric Distilled Solution A Mixturel Mixture II Mixture III Mixture IV 0.20 M KIO3 Solution 5 mL 5 mL 10 mL 10 mL Acid 0 mL 0.5 mL 0 mL 0.5 mL water 15 ml 14.5mL 10 mL 9.5 mL Lalculations: I. (6pt) Calculate the total number of moles of iodate ion present in each 0.2 M KlO3 solution. Calculate the molarity of iodate ion...
Need help with the following questions:
-What experimental observation will you use to determine the
end of the reaction in Parts A and B?
-What reaction takes place in Parts A and B to produce the
observation you gave as a response to Question 3?
-What are the sources of the IO3- reactant and the HSO3-
reactant in Parts A and B?
- How do you measure the amounts of reactant solutions used in
Parts A and B?
-What are...
6) What would you observe in each of the following cases and provide an explanation. a) A dilute solution of iodine is added to an aqueous solution of starch. b) The solution is placed in boiling water. c) The solution is cooled in running water. d) An aqueous starch solution is treated with Fehling's solution and placed in boiling water. Would you expect the result to be the same as that for D- glucose? Explain. e) A stock solution of...
2. In this experiment you will quantitatively measure a reaction rate of 5,0 2. with I in solu- tion to produce I, according to the following reaction: 5,0,- +21 slow -> 1, +2 SO,2- The color change is very sudden and dramatic when 2 x 10+ mol of I, is produced. The time required to produce 2 x 10 mol of I, can be measured accurately. rate of reaction. A A S,01 ΔΕ ΔΙ a) Write the rate law for...
2)
What chemical reaction does the titrant contribute to this
experiment?
CHEM 1A Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: Students will learn how to use a burette. Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. • Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a biological reducing agent. Introduction: Vitamin...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
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