Q: How long would it take to titrate 1.00 mmol H2S with a current of 100.0 mA?
A:
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Q: The selectivity coefficient of the fluoride ion-selective electrode is kF-,OH- = 0.15. How does the…
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kindly answer a,b,c since they are under 1 item. thanks!
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- A soluion of 10.0 mL of 0.0500 mol/L AgNO3 is titrated with 0.0250 mol/L NaBr in the cell: VKE||onbekende oplossing||Ag(s) Calculate the potential of the cell after adding 0.1 mL, 10.0 mL, 20.0 mL and 30.0 ml of titrant. E\deg (Ag+, Ag = 0.799 V; E(VKE = 0.244 V; Ksp(ABr) = 5.0*10-13A 0.0810 mL sample of an acid was titrated with electrogenerated OH-. It took 215s at a constant current of 0.140A to reach a phenolphthalein end point. Determine the molarity of the acid.Determine the potential of a platinum electrode (vs. SHE) when placed in a mixture of 0.00385 M TIC1, and 0.0431 M TICI at 25 °C. T1³+ (aq) + 2 e Tl* (aq) Ept Ept 1.2803 Incorrect || Determine the potential of a platinum electrode when placed in a mixture of 0.0173 M potassium permanganate (KMnO4) and 0.0876 M manganese chloride (MnCl₂) at pH 3.72 and 25 °C. E° = 1.25 V 2+ MnO4 (aq) + 5e + 8 H¹ (aq) = Mn²+ (aq) + 4H₂O(1) Incorrect V E° = 1.51 V V
- How long would it take to titrate 1.00 mmol H2S with a current of 100.0 mA?Qq) Estimate the pH of abutter made by udding 1ogm Nå HCo, to 250 ml of asolution which is Saturated with Co, (0.032 M) ? Ka= 4#10=7 Ans.: 7.57Calculate potentials after the addition of a) 25.00 mL; b) Veq; c) 50.00 mL of 0.0800 M Sn4+ to 50.00 mL of 0.100 M V2+ V 3+ + e V 2+ E 0 = -0.255V Sn4+ + 2e Sn2+ E 0 = 0.154V
- Calculate the potentials for each of the following cells. Indicate whether the reaction will proceed spontaneously in the direction written. Pb|Pb* (0.1393M)||Ca* (0.0511M)|Cd a. Zn Zn* (0.0364M)|T7* (0.00906.M),TI" (0.062M)|Pt b. Pr|TiO*(0.079M),Tr* (0.00916M), H¨ (0.0147M)|vO*(0.0134M),V* (0.0784M),H* (0.0538M)|Hg c.The cell Ag|AgCl(sat'd)||H+(a=x)glass electrode has a potential of -0.2094V when tne solution in the right hand compartment is a buffer of pH 4.006. The following potential are obtained when the buffer is replaced with unknowns:(a)-0.2806V and (b)-0.2132V. Calculate the pH and the hydrogen ion activity of each unknown.(c)Assuming an uncertainty of 0.001V in the junction potential,what is range of hydrogen ion activities within which the true value might be expected to lie?4. 5 mL of 0.006 M arsenite (As2O3) solution is subjected to coulometric titration as described in this laboratory using a current of 30 mA. Calculate the time that the current should be applied to reach the endpoint of the titration. INTRODUCTION:
- 15 The electromotive force of the cell: Pt | H,(1 atm) | HCI | Hg,CI, | Hg; is 0.686 V at 300 K. The pH of the HCI solution is; ( Hg,CI, + 2e E° = 0.2802 V) * 2Hg + 2CI %3D 5.85 O 4.27 O 2.49 6.87 О 3.43A 10.0-mL solution of 0.050 0 M AgNO3 was titrated with 0.025 0 M NaBr in the cell S.C.E. || titration solution | Ag(s) Find the cell voltage for 0.1 and 30.0 mL of titrant.Problems 6-11 Arizonium (Az) is a newly discovered element. Below is a Table listing the chemical potentials at 300 K of the A* cation and the Az₂O oxide. Dissolved substances Az+ H+ Solid substances Az Az₂O Liquid substances H₂O 000 μº chemical potential (Joule/mole) 48,250 0 0 -45953 -237,191 MacBook Pro * Ad DII