Consider the titration of 25.00 mL of 0.0200 M MnSO4
with 0.0100 M EDTA at a...
Consider the titration of 25.00 mL of 0.0200 M MnSO4
with 0.0100 M EDTA at a pH of 8.00. Calculate the value of
pMn+2 after adding the following EDTA volumes:
Consider the titration of 25.0 mL of 0.0200 M MnSO4 with 0.0100
M EDTA in a solution buffered to pH=6.00. Calculate pMn2+ at the
following volumes added EDTA, and use your data to sketch a
titration curve for they hypothetical sample: 0, 20.0, 40.0, 49.0,
49.9, 50.0, 50.1, 55.0, and 66.0 mL.
Calculate the pMn2+ in the titration of 25.0 ml of 0.0200M MnSO4
with 0.0100M EDTA in a solution buffered at ph=8 at the following
volumes: 0.00ml, 20.0ml, 40.0ml, 49.0ml, 49.9ml, 50.0ml, 50.1ml,
55.0ml, 60.0ml
Consider the titration of 100.0 mL of 0.0200 M H3PO4 with 0.121
M NaOH. Calculate the milliliters of base that must be added to
reach the first, second, and third equivalence points.
Consider the titration of 50.0 mL of a 0.0200 M solution of
butanoic acid with 0.100 M NaOH. First, calculate the equivalence
point (Ve). Then, calculate the pH at the following points along
the titration curve. Assume fractions are exact numbers and ignore
activities for all calculations in this problem.
A) VNaOH= 0.000 mL
B) VNaOH= 1/2Ve
C) VNaOH= 4/5Ve
D) VNaOH= Ve
E) VNaOH= 3/2Ve
Ascorbic asic (0.0100 M) was added to 10.0 mL of 0.0200 M Fe3+
at pH = 0.30, and the potential was monitored with Pt and saturated
Ag/AgCl electrodes.
Dehydroascorbic acid + 2H+ + 2e- -->
ascorbic acid + H2O (Eo = 0.390 V)
Using Eo = 0.767 V for the
Fe3+/Fe2+ couple, calculate the cell voltage
when 5.0, 10.0, and 15.0 mL of ascorbic acid have been added.
Correct answers are: 0.570 V, 0.307 V, and 0.184 V but not...
A 35 mL sample of water is triated with 0.0100 M EDTA. Exactly
9.70 mL of EDTA are required to reach the EBT endpoint. Calculate
the total hardness in ppm CaCO3.
Consider the titration of 25.00 mL of 0.0750 M Sn2+
with 0.1000 M Fe3+ in 1 M HCl to give Fe2+
and Sn4+ , using a Pt electrode for the cathode and a
Standard Hydrogen Electrode for the anode (connected to negative
terminal of potentiometer).
e) Sketch the titration curve and indicate the equivalent pt,
and the Etitr when ½ of the moles of analyte has been
oxidized.
Consider the titration of 20.00 ml of 0.0200 M sodium benzoate,
C6H5COO-Na+, with
0.0125 M HCl.
Write the chemical reaction occurring in this titration as a net
ionic equation.
Does the reaction go to completion? Show the relevant
calculation.
What is the equivalence point of this titration?
Calculate the pH of the initial point, before addition of HCl
(VHCl = 0.00 mL).
Calculate the pH after the addition of 10.00 mL of HCl
(VHCl = 10.00 mL).
Calculate the pH...