HI EXPERT! Please answer all parts: C) Sulfide in a water sample is titrated wit

Question

HI EXPERT!

Please answer all parts:

C) Sulfide in a water sample is titrated with electrolytically generated Fe2+. If a 10.00 mL aliquot of the water sample requires a current of 0.75 A for 5.4 minutes to reach the end point, what is the molarity sulfide in the water sample?

D) An experiment measured the cathodic current for five solutions of known Fe(CN)63- concentration using cyclic voltammetry. The collected data are plotted and the best line fit applied. If an unknown ferricyanide solution has a cathodic current of 17.38 mA, calculate the concentration ferricyanide in the unknown.

THANK YOU IN ADVANCE!

uA cathodic current vs mM ferricyanide Font 30.0 25.0 20.0 15.0 10.0 5.0 0.0 y 2.66x 1.12 R2 0.99793 6.00 Ferricyanide, mM 0.00 2.00 4.00 00 8.00 10.00 12.00

Explanation / Answer

I´ll answer the 3) question, if you want the other answer, attahc them in a new question.

1 A= 1 V / 1 OHM

OHM=1/0.75=1.33=0.00000133M

1 OHM = 0.001 K = 0.000001 M

C1/V1=C2/V2

C2=0.00000133*0.01L/1L=0.0000000133 M

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.