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H2S from cigarette smoke was collected by bubbling smoke through aqueous NaOH and
Chapter 14, Problem 14-F(choose chapter or problem)
H2S from cigarette smoke was collected by bubbling smoke through aqueous NaOH and measured with a sulfide ion-selective electrode. Standard additions of volume VS containing Na2S at concentration cS 1.78 mM were then made to V0 25.0 mL of unknown and the electrode response, E, was measured. VS (mL) E (V) VS (mL) E (V) 0 0.046 5 3.00 0.030 0 1.00 0.040 7 4.00 0.026 5 2.00 0.034 4 From a separate calibration curve, it was found that 0.985 in Equation 14-14. Using T 298.15 K and n 2 (the charge of S2), prepare a standard addition graph with Equation 14-15 and find the concentration of sulfide in the unknown. P
Questions & Answers
QUESTION:
H2S from cigarette smoke was collected by bubbling smoke through aqueous NaOH and measured with a sulfide ion-selective electrode. Standard additions of volume VS containing Na2S at concentration cS 1.78 mM were then made to V0 25.0 mL of unknown and the electrode response, E, was measured. VS (mL) E (V) VS (mL) E (V) 0 0.046 5 3.00 0.030 0 1.00 0.040 7 4.00 0.026 5 2.00 0.034 4 From a separate calibration curve, it was found that 0.985 in Equation 14-14. Using T 298.15 K and n 2 (the charge of S2), prepare a standard addition graph with Equation 14-15 and find the concentration of sulfide in the unknown. P
ANSWER:Step 1 of 4
Given that:
And
T is 298.15 K
n is -2