Homework Answers
#1. If wet buret is used then the droplets of water on the sides of buret will make the acid solution a little diluted and thus enthalpy of neutralisation will decrease .
More will be the concentration of acid solution more will be the enthalpy.
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Name: Date: Instructor's Initials: Lab Section: Enthalpy PreLab What would happen if you used a wet...
Name: Date: Instructor's Initials: Lab Section: The Ideal Gas Constant PreLab: sing the Balanced Equation (1),...
Name: Date: Instructor's Initials: Lab Section: The Ideal Gas Constant PreLab: sing the Balanced Equation (1), determine how many moles of hydrogen should be produced by 0.036 grams of Mg metal using an excess of HCI. If the average temperature of the water was 21.5 °C, what pressure inside the Graduated cylinder is contributed by the water vapor? (See Table 1). 3. If the atmospheric pressure in the lab was 754 mmHg on that day, what would be the pressure...
Name: Date: Instructor's Initials: Lab Section: Chemical Reactions PreLab write the correct molecular formula charg...
Name: Date: Instructor's Initials: Lab Section: Chemical Reactions PreLab write the correct molecular formula charge) that makes up each formula For each o each of the following named compounds, write the cor give the cation and anion (with the proper charge) that make unit. Molecular Formula Name Cation Hydrochloric acid Sodium hydroxide Sodium carbonate Sulfuric acid Sodium sulfate Sodium phosphate Potassium sulfate Cobalt(II) chloride Silver(l)nitrate Iron(III)nitrate
Date: Anme: instructor's Initials: Lab Section: Determination of mination of Acetic Acid in Vinegar by Titration...
Date: Anme: instructor's Initials: Lab Section: Determination of mination of Acetic Acid in Vinegar by Titration Pre-lab due at the beginning of Week 1 ced reaction of the neutralization of KHP and sodium hydroxide is: The balanced reaction a NaOH (aa) + KHC H4O4 (aa) - HO + NaC HOA Bu analogy, write the balanced reaction for the neutralization of acetic acid (HC2H302) by sodium hydroxide. 2. If the titration of 0.8094 g of 100% pure KHP requires 40.25 mL...
pre lab Experiment 23/ Oxidation-Reduction TiHration 207 Prelab Name Section Oxidation-Reduction Titration I. What does it...
pre
lab
Experiment 23/ Oxidation-Reduction TiHration 207 Prelab Name Section Oxidation-Reduction Titration I. What does it mean to standardize the KMnO, solution? 2. In the titration reaction, which substance is a. reduced? b. axidized? 3. What is the mole ratio of Mno,/C,O in the chemical reaction in this experiment? 4. What is the purpose of the 3 M H,S0, solution? What is the purpose of the manganese(ID) sulfate? 5. Why is it necessary to titrate slowly in this experiment?
1-4 1. What would happen if you used a water-soluble pen on the chromatography paper to...
1-4
1. What would happen if you used a water-soluble pen on the chromatography paper to mark your origin line? How would this affect the Re values? 2. A student accidently adds 17 ml of NaCl to their beaker rather than the 7 mL of NaCl they were suppose to add to their beaker. How might this mistake affect their chromatogram? Do you think they would be able to obtain any data? Briefly explain your answer. 10 3. Is it...
some of the reagents used in this lab are easily confused: such as persulfate and thiosulfate....
some of the reagents used in this lab are easily confused: such as
persulfate and thiosulfate. A student inadvertently switched these
reagents, adding the persulfate to beaker A and thiosulfate to
beaker b. How would this affect the results? What would the student
observe with respect to the mixture in beaker A?
3. Some of the reagents used in this lab are easily confused: such as persulfate (S.O,2-) and thiosulfate (S,0,2-). A student inadvertently switched these reagents, adding the persulfate...
Please help with the prelab questions! thank you!!!! Especially 2 and 3! Pre-Lab Questions 1. Calculate...
Please help with the prelab questions! thank you!!!!
Especially 2 and 3!
Pre-Lab Questions 1. Calculate the theoretical equivalence point (the volume!) in terms of ml NaOH adde each of the titrations. Assume the concentration of acid is 0.81 M and the concentration of base is 0.51 M. 2. Which equation can be used to find the pH of a buffer? Calculate the pH of a buffer containing 0.20 M CH3COOH and 0.20 M CH3COONa. What is the pH after...
titration lab report additional images of lab report QUESTIONS 1. A student masse 0878 of an...
titration lab report
additional images of lab report
QUESTIONS 1. A student masse 0878 of an unknown acid follows the titration procedure required to reach the endpoint on a 10.0 ml Calculate the molar mass of the acid. masses out 0.878 of die in 100 ml volume and titration procedure of Partsherds th the average volume of Non to reach the endpoint on 100 ml aliquot of the acid solution is 18.3 m . 2. In the vinegar titrations (Part...
lab report titration help please! additional images on lab report 3. Federal standards require that any...
lab report titration help please!
additional images on lab report
3. Federal standards require that any commercial material called "vinegar" must contain as cast acetic acid. According to your results in question 4, does the vinegar sample you titrated meet the Federal standards? Explain why or why not. PART B: IDENTIFICATION OF AN UNKNOWN ACID DATA Molarity of NaOH used Mass of unknown acid used 0.050M 0.5989 14.43mc Average volume of NaOH used in the titration CALCULATIONS 1. Using the...
You must read the experiment and then answer these questions. 1. Look at the procedure for...
You must read the experiment and then answer these questions. 1. Look at the procedure for using a pipet. Why should you not force the last remaining amount of liquid out of the pipet? 2. If you have a 50.00 mL volumetric flask (a flask marked at a specific volume) and a pipette that measures up to 10-mL with marks to the nearest 1/10 mL, how much solute would you add to the flask to make 50.00 mL of a...
Name: Date: Instructor's Initials: Lab Section: The Ideal Gas Constant PreLab: sing the Balanced Equation (1), determine how many moles of hydrogen should be produced by 0.036 grams of Mg metal using an excess of HCI. If the average temperature of the water was 21.5 °C, what pressure inside the Graduated cylinder is contributed by the water vapor? (See Table 1). 3. If the atmospheric pressure in the lab was 754 mmHg on that day, what would be the pressure...
Name: Date: Instructor's Initials: Lab Section: Chemical Reactions PreLab write the correct molecular formula charge) that makes up each formula For each o each of the following named compounds, write the cor give the cation and anion (with the proper charge) that make unit. Molecular Formula Name Cation Hydrochloric acid Sodium hydroxide Sodium carbonate Sulfuric acid Sodium sulfate Sodium phosphate Potassium sulfate Cobalt(II) chloride Silver(l)nitrate Iron(III)nitrate
Date: Anme: instructor's Initials: Lab Section: Determination of mination of Acetic Acid in Vinegar by Titration Pre-lab due at the beginning of Week 1 ced reaction of the neutralization of KHP and sodium hydroxide is: The balanced reaction a NaOH (aa) + KHC H4O4 (aa) - HO + NaC HOA Bu analogy, write the balanced reaction for the neutralization of acetic acid (HC2H302) by sodium hydroxide. 2. If the titration of 0.8094 g of 100% pure KHP requires 40.25 mL...
pre
lab
Experiment 23/ Oxidation-Reduction TiHration 207 Prelab Name Section Oxidation-Reduction Titration I. What does it mean to standardize the KMnO, solution? 2. In the titration reaction, which substance is a. reduced? b. axidized? 3. What is the mole ratio of Mno,/C,O in the chemical reaction in this experiment? 4. What is the purpose of the 3 M H,S0, solution? What is the purpose of the manganese(ID) sulfate? 5. Why is it necessary to titrate slowly in this experiment?
1-4
1. What would happen if you used a water-soluble pen on the chromatography paper to mark your origin line? How would this affect the Re values? 2. A student accidently adds 17 ml of NaCl to their beaker rather than the 7 mL of NaCl they were suppose to add to their beaker. How might this mistake affect their chromatogram? Do you think they would be able to obtain any data? Briefly explain your answer. 10 3. Is it...
some of the reagents used in this lab are easily confused: such as
persulfate and thiosulfate. A student inadvertently switched these
reagents, adding the persulfate to beaker A and thiosulfate to
beaker b. How would this affect the results? What would the student
observe with respect to the mixture in beaker A?
3. Some of the reagents used in this lab are easily confused: such as persulfate (S.O,2-) and thiosulfate (S,0,2-). A student inadvertently switched these reagents, adding the persulfate...
Please help with the prelab questions! thank you!!!!
Especially 2 and 3!
Pre-Lab Questions 1. Calculate the theoretical equivalence point (the volume!) in terms of ml NaOH adde each of the titrations. Assume the concentration of acid is 0.81 M and the concentration of base is 0.51 M. 2. Which equation can be used to find the pH of a buffer? Calculate the pH of a buffer containing 0.20 M CH3COOH and 0.20 M CH3COONa. What is the pH after...
titration lab report
additional images of lab report
QUESTIONS 1. A student masse 0878 of an unknown acid follows the titration procedure required to reach the endpoint on a 10.0 ml Calculate the molar mass of the acid. masses out 0.878 of die in 100 ml volume and titration procedure of Partsherds th the average volume of Non to reach the endpoint on 100 ml aliquot of the acid solution is 18.3 m . 2. In the vinegar titrations (Part...
lab report titration help please!
additional images on lab report
3. Federal standards require that any commercial material called "vinegar" must contain as cast acetic acid. According to your results in question 4, does the vinegar sample you titrated meet the Federal standards? Explain why or why not. PART B: IDENTIFICATION OF AN UNKNOWN ACID DATA Molarity of NaOH used Mass of unknown acid used 0.050M 0.5989 14.43mc Average volume of NaOH used in the titration CALCULATIONS 1. Using the...
You must read the experiment and then answer these questions. 1. Look at the procedure for using a pipet. Why should you not force the last remaining amount of liquid out of the pipet? 2. If you have a 50.00 mL volumetric flask (a flask marked at a specific volume) and a pipette that measures up to 10-mL with marks to the nearest 1/10 mL, how much solute would you add to the flask to make 50.00 mL of a...
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