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1) Why KMnO, is preferred as an oxidizing agent in redox titrations? 2) What is the...
what is the answer for number 3? Exercises: 8 H20 2 MnO2 5C2O42 16 H Mn2...
what is the answer for number 3?
Exercises: 8 H20 2 MnO2 5C2O42 16 H Mn2 5 CO2 + 1. What is the oxidizing agent in the balanced net ionic equation above? What is the reducing agent? Which e lement is oxidized? Which element is reduced 2 I 32.24 mL of a 0.0185 M KMnO, solution were required to titrate the iron in a 0.989 g of unknown iron sample. Calculate the percent iron in the sample. 3. Indicate what...
need help with the Molarity of both parts EXPERIMENT 8: AN OXIDATION-REDUCTION TITRATION DATA SHEET 0.2M...
need help with the Molarity of both parts
EXPERIMENT 8: AN OXIDATION-REDUCTION TITRATION DATA SHEET 0.2M 10 m2 Concentration of original KMnO solution Volume of Original KMnO4 solution used Molarity of KNOWN HOCg04 D.ISOM Standardization of KMnO solution. Sample 3 Sample 1 Volume H2C204 11.00ML Initial buret reading (KMnO4) .00 mc Final buret reading (KMnO4) 12.00ML Volume KMnO4 12.00ml Molarity KMnO4 Average (KMnO4) Sample 2 4:00ML 12.00mL 13.5ML . SOL Determination of Unknown Solution Sample 3 Sample 1 4ml Volume...
A. Recrystallization is an important technique that we used in this lab to purify solids. Answer...
A. Recrystallization is an important technique that we used in this lab to purify solids. Answer the following questions related to this technique, which is outlined in the diagram below. (2 pts. each) Watch ass Watch Glass Hot solvent Insoluble mpurities Dissolve the compound Continue heating if necessary hot solvent Fluted fiter paper Continue heating until half of the solvent is evaporated Vacuum filtration Allowed to cool to room temperature then put in an ice bath HOT Gravity filtration 3....
Recrystallization/Melting Point 2-ethoxybenzamide is the unknown. 1. Adding enough solvent to achieve a “saturated” solution is...
Recrystallization/Melting Point 2-ethoxybenzamide is the unknown. 1. Adding enough solvent to achieve a “saturated” solution is necessary for recrystallization. a. What is the problem with adding too much solvent? b. What is the problem with adding too little solvent? 2. Why is fluted filter paper preferred over standard conical filter paper for the filtration of the recrystallized solid? 3. What is the purpose of adding boiling stones when heating solutions to a boil? 4. Name 2 requirements that must be...
Ksp of Ca(IO3)2 lab questions 1) Why is it necessary to filter the calcium iodate solution through dry filter paper, without adding any water? 2) If water had been added during the filtration process,...
Ksp of Ca(IO3)2 lab questions 1) Why is it necessary to filter the calcium iodate solution through dry filter paper, without adding any water? 2) If water had been added during the filtration process, how would this affect your calculated value for the Ksp of calcium iodate? Clearly explain whether your value would be too high or too low compared to the actual Ksp and why.
In the Diels Alder Reaction of a Diene Found in Eucalyptus Oil lab: 1. Answer the...
In the Diels Alder Reaction of a Diene Found in Eucalyptus Oil lab: 1. Answer the questions associated with the following steps of the proceudre: Step 5: After additng eucalyptus oil, anhydrous diethyl ether, and maleic anhydride to the mocrovial, a jacketed condenser is attached to the microvial and clamped to a ring stand. The mixture is placed in the aluminum block and gently refluxed for 45 minutes. What is the function of the jacketed condenser? Step 9: After the...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
**PLEASE ANSWER ALL QUESTIONS AND EXPLAIN ** TUTORIAL 7. GROUP 16 ELEMENTS 1. What are the...
**PLEASE ANSWER ALL QUESTIONS AND EXPLAIN **
TUTORIAL 7. GROUP 16 ELEMENTS 1. What are the two commercial methods for the preparation of oxygen? 2. Give an example of an acidic oxide and a basic oxide. 3. Name the allotropes of oxygen and sulphur and discuss how they can he 4. Give uses of the following: SO2, Na2S20s and H2SO4. 5. Give equations for the steps in the contact process for the manufacture o 6. Write equations for the following:...
Help with PreLab questions 1-4 Procedure Esterification Each group will be assigned an unknown alcohol by...
Help with PreLab questions 1-4
Procedure Esterification Each group will be assigned an unknown alcohol by the instructor. Record the unknown number and then add the contents of the vial (25 mmol of alcohol) to a 50 mL round bottom flask with a stir bar Then add 2.75 mL (approx. 50 mmol) of acetic acid followed by 0.25 mL of concentrated sulfuric acid Add a reflux condenser then reflux the mixture in a sand bath with stirring for one hour....
What are the desirable characteristics of a solvent to be used in the recrystallisation of a...
What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
what is the answer for number 3?
Exercises: 8 H20 2 MnO2 5C2O42 16 H Mn2 5 CO2 + 1. What is the oxidizing agent in the balanced net ionic equation above? What is the reducing agent? Which e lement is oxidized? Which element is reduced 2 I 32.24 mL of a 0.0185 M KMnO, solution were required to titrate the iron in a 0.989 g of unknown iron sample. Calculate the percent iron in the sample. 3. Indicate what...
need help with the Molarity of both parts
EXPERIMENT 8: AN OXIDATION-REDUCTION TITRATION DATA SHEET 0.2M 10 m2 Concentration of original KMnO solution Volume of Original KMnO4 solution used Molarity of KNOWN HOCg04 D.ISOM Standardization of KMnO solution. Sample 3 Sample 1 Volume H2C204 11.00ML Initial buret reading (KMnO4) .00 mc Final buret reading (KMnO4) 12.00ML Volume KMnO4 12.00ml Molarity KMnO4 Average (KMnO4) Sample 2 4:00ML 12.00mL 13.5ML . SOL Determination of Unknown Solution Sample 3 Sample 1 4ml Volume...
A. Recrystallization is an important technique that we used in this lab to purify solids. Answer the following questions related to this technique, which is outlined in the diagram below. (2 pts. each) Watch ass Watch Glass Hot solvent Insoluble mpurities Dissolve the compound Continue heating if necessary hot solvent Fluted fiter paper Continue heating until half of the solvent is evaporated Vacuum filtration Allowed to cool to room temperature then put in an ice bath HOT Gravity filtration 3....
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
**PLEASE ANSWER ALL QUESTIONS AND EXPLAIN **
TUTORIAL 7. GROUP 16 ELEMENTS 1. What are the two commercial methods for the preparation of oxygen? 2. Give an example of an acidic oxide and a basic oxide. 3. Name the allotropes of oxygen and sulphur and discuss how they can he 4. Give uses of the following: SO2, Na2S20s and H2SO4. 5. Give equations for the steps in the contact process for the manufacture o 6. Write equations for the following:...
Help with PreLab questions 1-4
Procedure Esterification Each group will be assigned an unknown alcohol by the instructor. Record the unknown number and then add the contents of the vial (25 mmol of alcohol) to a 50 mL round bottom flask with a stir bar Then add 2.75 mL (approx. 50 mmol) of acetic acid followed by 0.25 mL of concentrated sulfuric acid Add a reflux condenser then reflux the mixture in a sand bath with stirring for one hour....
What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
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