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QUESTION
LABORATORY ASSIGNMENT 1 You only have one attempt at this quiz so be sure to read all information here prior to clicking the start button. Once you...
Step 1: Balance the equation.
C) Based
on the following data for the titration between potassium hydroxide (KOH) and
hydrochloric acid (HCl), use the 6 steps of stoichiometry to determine the
molarity of KOH. Show all working.
Step 1: Balance the equation.
A) Based
on the following data for the titration between sodium hydroxide (NaOH) and
sulfuric acid (H2SO4), use the 6 steps of stoichiometry to determine the
molarity of H2SO4. Show all working.
Step 1: Balance the equation.
B) Based
on the following data for the titration between sodium hydroxide (NaOH) and and
sulfuric acid (H2SO4), use the 6 steps of stoichiometry to determine the
molarity of H2SO4. Show all working.
Step 1: Balance the equation.
C) Based
on the following data for the titration between potassium hydroxide (KOH) and
sulfuric acid (H2SO4), use the 6 steps of stoichiometry to determine the
molarity of KOH. Show all working.
Step 1: Balance the equation.
LABORATORY ASSIGNMENT 1You only have one attempt at this quiz so be sure to read all information here prior toclicking the start button. Once you start the canvas quiz you will have 120 min in which tofinalise and submit all 5 questions including the file calculation uploads. The time limitshould be adequate given all possible calculation questions are given here so you are able toprepare extensively prior to starting the quiz. It has been set to ensure you complete theassignment in one sitting rather than viewing the quiz and then logging out of canvas priorto answering all questions and thus submitting an incomplete attempt. Remember, you onlyhave one attempt at this quiz.The calculation questions (Q3, Q4 and Q5) will require the upload of a file containing yourown working of calculations. This file will preferably be a scanned pdf file, or alternatively aclear jpg image, of your legible hand written calculations. It is your responsibility to providea file that can be read by the demonstrators who will be marking your work. The mark willbe calculated as per the rubric below. Question 1 – Use of a pipette (1 mark)You will be asked whether a series of statements are true or false with respect to thecorrect techniques for using a pipette to accurately deliver a known volume. Question 2 – Use of a burette (1 mark)You will be asked whether a series of statements are true or false with respect to thecorrect techniques for using a burette to accurately record the titrant volume. Question 3 – Titration data and error calculations (1 mark)You will be randomly allocated one of the following sets of titration data from which todetermine an average titre and associated % relative error using the formula:Range% Relative error=x 100 % .MeanA) Use the following burette readings to calculate an average titre volume in mL and a %relative error for this value. Show all working.Burette Readings (mL)Final 21.40 42.65 21.20 42.35 Initial 0.00 21.40 0.00 21.20 B) Use the following burette readings to calculate an average titre volume in mL and a %relative error for this value. Show all working.Burette Readings (mL)Final 23.90 45.65 22.70 45.35 Initial 0.05 23.90 0.00 22.70 C) Use the following burette readings to calculate an average titre volume in mL and a %relative error for this value. Show all working.Burette Readings (mL)Final 22.10 44.05 22.00 43.85 Initial 0.00 22.10 0.10 22.00 Question 4 – Titration calculation (1 mark)You will be randomly allocated one of the following titration calculation questions for youto complete.A) Based on the following data for the titration between sodium hydroxide (NaOH) andhydrochloric acid (HCl), use the 6 steps of stoichiometry to determine the molarity of HCl.Show all working.Volume of HCl sample (in flask) = 25.00 mLBurette Readings Rough (mL) Molarity of NaOH titrant = 0.09900 MAccurate Burette Readings (mL) Final 21.40 42.65 21.20 42.35 Initial 0.00 21.40 0.00 21.20 B) Based on the following data for the titration between sodium hydroxide (NaOH) andacetic acid (CH 3COOH), use the 6 steps of stoichiometry to determine the molarity of aceticacid. Show all working.Volume of CH 3COOH sample (in flask) = 20.00 mLBurette Readings Rough (mL) Molarity of NaOH titrant = 0.1050 M Accurate Burette Readings (mL) Final 23.90 45.65 22.70 45.35 Initial 0.05 23.90 0.00 22.70 C) Based on the following data for the titration between potassium hydroxide (KOH) andhydrochloric acid (HCl), use the 6 steps of stoichiometry to determine the molarity of KOH.Show all working.Volume of KOH sample (in flask) = 20.00 mLBurette Readings Rough (mL) Molarity of HCl titrant = 0.09870 MAccurate Burette Readings (mL) Final 22.10 44.05 22.00 43.85 Initial 0.00 22.10 0.10 22.00 Question 5 – Titration calculation (1 mark)You will be randomly allocated one of the following titration calculation questions for youto complete.A) Based on the following data for the titration between sodium hydroxide (NaOH) andsulfuric acid (H2SO4), use the 6 steps of stoichiometry to determine the molarity of2SOH 4.Show all working.Volume of H 2SO4 sample (in flask) = 25.00 mLBurette Readings Rough (mL) Molarity of NaOH titrant = 0.1980 MAccurate Burette Readings (mL) Final 21.40 42.65 21.20 42.35 Initial 0.00 21.40 0.00 21.20 B) Based on the following data for the titration between sodium hydroxide (NaOH) and andsulfuric acid (H2SO4), use the 6 steps of stoichiometry to determine the molarity of2SOH 4.Show all working.Volume of H 2SO4 sample (in flask) = 20.00 mLBurette Readings Rough (mL) Molarity of NaOH titrant = 0.1050 MAccurate Burette Readings (mL) Final 23.90 45.65 22.70 45.35 Initial 0.05 23.90 0.00 22.70 C) Based on the following data for the titration between potassium hydroxide (KOH) andsulfuric acid (H2SO4), use the 6 steps of stoichiometry to determine the molarity of KOH.Show all working.Volume of KOH sample (in flask) = 20.00 mLBurette Readings Rough (mL) Molarity of H2SO4 titrant = 0.04870 MAccurate Burette Readings (mL) Final 22.10 44.05 22.00 43.85 Initial 0.00 22.10 0.10 22.00