All part of one multi-part laboratory question: A. What does 40% NaOH (wt/vol) mean and how...
All part of one multi-part laboratory question:
A. What does 40% NaOH (wt/vol) mean and how would you prepare such a solution? What is the N of this solution?
B. How many ml of a 40% NaOH (wt/vol) solution should be used to make 1 liter of a 0.2 N solution?
C. Show the reaction that occurs between NaOH and potassium acid phthalate when you are standardizing the NaOH solution.
D. You have diluted some concentrated HCl with distilled H2O, so it is about 0.1 N HCl. Describe how you could now standardize this HCl solution. Include in your description any equation you would use for the calculations. (Assume that you have a standardized solution of 0.1N NaOH.).
F. Did any changes occur in either the boiled or the un-boiled sample of soda within several minutes after the phenolphthalein end point was reached? If so, what caused this? (Show the chemical reaction.) Explain the difference if a change occurred in one type of sample and not the other.
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All part of one multi-part laboratory question:
A. What does 40% NaOH (wt/vol) mean and how...
Determine how many liters (l) of stock HCl were used in titration #1. Please fill all...
Determine how many liters (l) of stock HCl were used
in titration #1.
Please fill all questions under "Data Analysis"
Page 1 is just instruction for Page 2
EXPT 10: TITRATION OF STRONG ACID WITH STRONG BASE Note to Students: when you see the symbol (), this means there is something you must add into the mock data yourself. You may handwrite or type your answers directly on these pages for submission to a Blackboard link. Remember to show all...
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)...
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2....the problem is that if I don't boil it for that long and (30 min) b/c of not enough time but I put the water I boiled for 1/2 hr aproximately into a NaOH bottle with a CO2 absorber and stored it there for a few days. I would assume that I would have to boil the water again...but...
Exercises 6 40 pts You may need to refer to your chemistry textbook for help in...
Exercises 6 40 pts You may need to refer to your chemistry textbook for help in writing some of these equations 1. Which solution(s) were strong electrolytes? Which solution(s) were weak electrolytes? 3 pts 2 pts 2. In basic solution the color of phenolphthalein is acidic solution it is 3. In basic solution the color of litmus is solution it is and in 2 pts. and in acidic 2 pts 4. In basic solution the color of methyl red is...
I need it right now, please help me?? PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The...
I
need it right now, please help me??
PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The vinegar solution must be diluted by a factor of 5 to be suitable for titration. 1. Obtain - 20 ml of the stock vinegar solution from the fume hood. 2. Using the 10-ml. pipet, pipet" 10 mL of the stock solution to a 50-ml volumetric flask. 3. Fill the volumetric flask to the calibration line with distilled water. Be sure not to go over...
I need help with part 6! All the other questions are correct so far! Thank you!...
I need help with part 6! All the other questions are correct so far! Thank you! In Part 1 of Lab 2 you will make and standardize a solution of NaOH(aq). Suppose in the lab you measure the solid NaOH and dissolve it into 100.0 mL of water. You then measure 0.1995 g of KHP (KC8H5O4, 204.22 g/mol) and place it in a clean, dry 100-mL beaker, and then dissolve the KHP in about 25 mL of water and add...
I need help calculating the mass percent and with the post lab question #2. Part 1...
I need help calculating the mass percent and with the post lab
question #2.
Part 1 Mass Initial | Final Vol Nall Moles concen. KPHCG (ML) I (m2) Used (m2) KHP (mol)/NaOH(M) 0.28470.00 13.60r 13.600 10.00- 0.1025 2 UZ + ZANT 13.600 24.45 1 10.85 0.001128 10.40 Aug NaOH Concentration (M):0.1032 Part2 Vinegar identification # 4 Vinegar sample date: (011/ Vol Vinegat Initial Final Yol NaOH Mol Acotic Mass Acctic Mass % Titr ULST I OML Used (ml) Acid (mol)...
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Lit...
Acid, bases and buffers
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Litmus (color) Solution Juice (color)values (colbr) no reaction 2.890 Magenta 11.37dark green Red blue no reaction 2.700 Magenta lemon juice soft drink drain cleaner no reaction detergent baking soda no reaction red red no raction 3.530 Purple blue 12.56 no reactionno reaction 8.700 dark green 9.350 teal/green Part B Total Number of rops of HCl(aq) Added DI Water...
Standardization of NaOH: Acid Base Titration Objective: In this lab, you will accurately determine the concentration...
Standardization of NaOH: Acid Base Titration Objective: In this lab, you will accurately determine the concentration of a solution of sodium hydroxide (NaOH) using a 0.500M potassium hydrogen phthalate (KHP) standard solution. Background: Acid–Base Titrations When an acid reacts with a base, a neutralization reaction occurs. The H+ ions from the acid and the HO– ions from the base combine to form water and are therefore neutralized. The other product of reaction is a salt. For example, hydrochloric acid reacts...
Please answer all. Ne rate of reaction Part 1 Concentration of OH (in bottle) 0-10M Concentration...
Please answer all.
Ne rate of reaction Part 1 Concentration of OH (in bottle) 0-10M Concentration of CV (in bottle) 1.2 x 10M M,V, To find the concentrations of the solutions you created, use M,V, M, is initial concentration of CV V, is the volume of CV you measured out V, is total volume of the final solution Solve for My, the concentration of CV after dilution. Show work. A. Calculate concentration of CV after dilution 1.5 Vol. CV (ml)...
Determine how many liters (l) of stock HCl were used
in titration #1.
Please fill all questions under "Data Analysis"
Page 1 is just instruction for Page 2
EXPT 10: TITRATION OF STRONG ACID WITH STRONG BASE Note to Students: when you see the symbol (), this means there is something you must add into the mock data yourself. You may handwrite or type your answers directly on these pages for submission to a Blackboard link. Remember to show all...
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)...
Exercises 6 40 pts You may need to refer to your chemistry textbook for help in writing some of these equations 1. Which solution(s) were strong electrolytes? Which solution(s) were weak electrolytes? 3 pts 2 pts 2. In basic solution the color of phenolphthalein is acidic solution it is 3. In basic solution the color of litmus is solution it is and in 2 pts. and in acidic 2 pts 4. In basic solution the color of methyl red is...
I
need it right now, please help me??
PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The vinegar solution must be diluted by a factor of 5 to be suitable for titration. 1. Obtain - 20 ml of the stock vinegar solution from the fume hood. 2. Using the 10-ml. pipet, pipet" 10 mL of the stock solution to a 50-ml volumetric flask. 3. Fill the volumetric flask to the calibration line with distilled water. Be sure not to go over...
I need help calculating the mass percent and with the post lab
question #2.
Part 1 Mass Initial | Final Vol Nall Moles concen. KPHCG (ML) I (m2) Used (m2) KHP (mol)/NaOH(M) 0.28470.00 13.60r 13.600 10.00- 0.1025 2 UZ + ZANT 13.600 24.45 1 10.85 0.001128 10.40 Aug NaOH Concentration (M):0.1032 Part2 Vinegar identification # 4 Vinegar sample date: (011/ Vol Vinegat Initial Final Yol NaOH Mol Acotic Mass Acctic Mass % Titr ULST I OML Used (ml) Acid (mol)...
Acid, bases and buffers
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Litmus (color) Solution Juice (color)values (colbr) no reaction 2.890 Magenta 11.37dark green Red blue no reaction 2.700 Magenta lemon juice soft drink drain cleaner no reaction detergent baking soda no reaction red red no raction 3.530 Purple blue 12.56 no reactionno reaction 8.700 dark green 9.350 teal/green Part B Total Number of rops of HCl(aq) Added DI Water...
Please answer all.
Ne rate of reaction Part 1 Concentration of OH (in bottle) 0-10M Concentration of CV (in bottle) 1.2 x 10M M,V, To find the concentrations of the solutions you created, use M,V, M, is initial concentration of CV V, is the volume of CV you measured out V, is total volume of the final solution Solve for My, the concentration of CV after dilution. Show work. A. Calculate concentration of CV after dilution 1.5 Vol. CV (ml)...
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