n this week experiment, We are using a primary standard to standardize KMnO4 solution (standardize KMnO4...
n this week experiment, We are using a primary standard to standardize KMnO4 solution (standardize KMnO4 means determine exact Molarity of KMnO4)
Which of the following statements is FALSE about the primary standard?
It should be a high level of pure compound
It should have higher molecualr weight
It should be oragnic compound
It should be stable compound
It should be non-hygroscopic
Homework Answers
Primary standard is prepared by a pure organic compound which is non- hygroscopic and a stable compound.
Hence statement II is false. It can be of lower molecular weight.
Add Answer to:
n this week experiment, We are using a primary standard to
standardize KMnO4 solution (standardize KMnO4...
can someon help with these questions To make a standard NaOH solution, about 13 mL of...
can someon help with these questions
To make a standard NaOH solution, about 13 mL of 3 M NaOH is mixed with about 300 mL of deionized water (H2OD) in a 500 ml beaker. Why is it not necessary to know the exact volumes of NaOH and H2OD? a b. It isn't necessary to know more than 1 significant digit As a standard solution, the NaOH solution will only need an approximate molarity. The NaOH solution will be further diluted...
Suppose 1.00 g of NaOH is used to prepare 250 mL of an NaOH solution. Compare...
Suppose 1.00 g of NaOH is used to prepare 250 mL of an NaOH solution. Compare the expected molarity of this solution to the actual average molarity you measured in the standardization. What do you notice? Do you think the results would have been more accurate if a different type of acid or base were used in the standardization? Why, or why not? There are many different primary standards that could be used in a standardization titration. What are the...
Help please??! Molarity of KMnO4 is 0.0100 M Determination of oxalate in Kufe.(0,0...0). Name AB A...
Help please??!
Molarity of KMnO4 is 0.0100 M
Determination of oxalate in Kufe.(0,0...0). Name AB A LOCAL Partner's Name MA R ENDALL Total mass of product synthesized in previous experiment (6) 1720 g Molarity of KMnO. (Record from the label on the container) Trial 1 Trial 2 Trial 2 0.105 1. Mass of sample taken for titration (g) 0.11 2. Initial burette reading (ml) 0 Final burette reading (ml) 20 33.4 22.2 4. Volume of KMnO, used (ml) 2.2 5....
grams of KHP 0.6413 mL NaOH needed to titrate KhP to endpoint 38.80 Grams of unknown...
grams of KHP 0.6413
mL NaOH needed to titrate KhP to endpoint 38.80
Grams of unknown acid: 1.5106
mL NaOH needed to titrate unknown acid to endpoint
33.55
need to know molarity of NaOH solution and Molar mass of
unknown acid. Please help and show work!
CHEM 265 LAB EXPERIMENT NUMBER 4 DETERMINATION OF THE MW OF AN UNKNOWN ACID This experiment utilizes a titration to determine the molecular weight of an unknown acid. In this experiment, the endpoint of...
equation 4 = MNaOH = mKHP/(MWKHP(V2 ? V1)NaOH) Write the equation and determine all the partial...
equation 4 = MNaOH = mKHP/(MWKHP(V2 ? V1)NaOH) Write the
equation and determine all the partial derivatives that are used to
calculate the uncertainty (error) in the NaOH concentration? Be
sure to use eq(4). the question is number 8 on the pictures!
Numer
8 please, I dont need any of the other questions
Experiment 3 -Preparing and Standardizing NaOH The goals are (1) to prepare and standardize a sodium hydroxide solution that is in a range of 0.095-0.11 M, (2)...
help on number 3 here is lab we did EXPERIMENT 19 An Analysis of Commercial Antacids...
help on number 3 here is lab we did
EXPERIMENT 19 An Analysis of Commercial Antacids Rolaids Alka Seltzer OBJECTIVES: Determine the per gram neutralizing ability of a commercial antacio Determine the per gram neutralizing ability of sodium bicarbonate Compare the effectiveness of several antacids. INTRODUCTION: "How do you spell relief two hecimie The parietal cells in the stomach secrete sufficient hydrochloric aci 0.10 M The flow of HCl increases when food enters the stomach and so acid secrete sufficient...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...
Electrolytes, Concentration and Dilution of Solutions n this part of the experiment, you will make a dilution of a stock solution of known concentration and calculate the concentration of the di...
Electrolytes, Concentration and Dilution of Solutions n this part of the experiment, you will make a dilution of a stock solution of known concentration and calculate the concentration of the dilute solution. DILUTION OF A STOCK SOLUTION PART C: Measurements and Observations Procedure Check out a 100-mL volumetric flask from your instructor. Fill test tube about 2/3 concentration of the active ingredient from its label including units. Record 1. orlt O " concentration of active ingredient. full of "Magic 2....
1) What chemical is the titrant in this experiment? What chemical is the analyte in this experiment? Experi...
1) What chemical is the titrant in this experiment? What
chemical is the analyte in this
experiment?
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...
Question 202.5 pts If we consider the simple random sampling process as an experiment, the sample...
Question 202.5 pts If we consider the simple random sampling process as an experiment, the sample mean is _____. Group of answer choices always zero known in advance a random variable exactly equal to the population mean Flag this Question Question 212.5 pts The basis for using a normal probability distribution to approximate the sampling distribution of x ¯ and p ¯ is called _____. Group of answer choices The Law of Repeated Sampling The Central Limit Theorem Expected Value...
can someon help with these questions
To make a standard NaOH solution, about 13 mL of 3 M NaOH is mixed with about 300 mL of deionized water (H2OD) in a 500 ml beaker. Why is it not necessary to know the exact volumes of NaOH and H2OD? a b. It isn't necessary to know more than 1 significant digit As a standard solution, the NaOH solution will only need an approximate molarity. The NaOH solution will be further diluted...
Help please??!
Molarity of KMnO4 is 0.0100 M
Determination of oxalate in Kufe.(0,0...0). Name AB A LOCAL Partner's Name MA R ENDALL Total mass of product synthesized in previous experiment (6) 1720 g Molarity of KMnO. (Record from the label on the container) Trial 1 Trial 2 Trial 2 0.105 1. Mass of sample taken for titration (g) 0.11 2. Initial burette reading (ml) 0 Final burette reading (ml) 20 33.4 22.2 4. Volume of KMnO, used (ml) 2.2 5....
grams of KHP 0.6413
mL NaOH needed to titrate KhP to endpoint 38.80
Grams of unknown acid: 1.5106
mL NaOH needed to titrate unknown acid to endpoint
33.55
need to know molarity of NaOH solution and Molar mass of
unknown acid. Please help and show work!
CHEM 265 LAB EXPERIMENT NUMBER 4 DETERMINATION OF THE MW OF AN UNKNOWN ACID This experiment utilizes a titration to determine the molecular weight of an unknown acid. In this experiment, the endpoint of...
equation 4 = MNaOH = mKHP/(MWKHP(V2 ? V1)NaOH) Write the
equation and determine all the partial derivatives that are used to
calculate the uncertainty (error) in the NaOH concentration? Be
sure to use eq(4). the question is number 8 on the pictures!
Numer
8 please, I dont need any of the other questions
Experiment 3 -Preparing and Standardizing NaOH The goals are (1) to prepare and standardize a sodium hydroxide solution that is in a range of 0.095-0.11 M, (2)...
help on number 3 here is lab we did
EXPERIMENT 19 An Analysis of Commercial Antacids Rolaids Alka Seltzer OBJECTIVES: Determine the per gram neutralizing ability of a commercial antacio Determine the per gram neutralizing ability of sodium bicarbonate Compare the effectiveness of several antacids. INTRODUCTION: "How do you spell relief two hecimie The parietal cells in the stomach secrete sufficient hydrochloric aci 0.10 M The flow of HCl increases when food enters the stomach and so acid secrete sufficient...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...
Electrolytes, Concentration and Dilution of Solutions n this part of the experiment, you will make a dilution of a stock solution of known concentration and calculate the concentration of the dilute solution. DILUTION OF A STOCK SOLUTION PART C: Measurements and Observations Procedure Check out a 100-mL volumetric flask from your instructor. Fill test tube about 2/3 concentration of the active ingredient from its label including units. Record 1. orlt O " concentration of active ingredient. full of "Magic 2....
1) What chemical is the titrant in this experiment? What
chemical is the analyte in this
experiment?
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...
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