H2S can be analyzed by titration with coulometrically generated I2. The I2 is generated electrolytically from the I- in KI via:2I-(aq) ------> I2(aq) + 2e-The generated I2 then reacts in a 1:1 titration via:H2S(aq) + I2(aq) --------> S(s) + 2H+(aq) + 2I-(aq)Analysis of 50.00mL of a solution containing H2S was analyzed with dissolved KI. Electrolysis required 812 seconds at 52.6mA current. What is the [H2S] in the original solution?

The titration of 0.2121 g of pure Na2C2O4 (134.00 g/mol) required 43.31 mL of KMnO4. What is the molar concentration of the KMnO4 solution? Given that the chemical reaction is 2MnO4- + 5C2O42- + 16H+     ----->   2Mn2+ + 10CO2  + 8H2O   Provide a detailed solution.

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If the standard solutions had unknowingly been made up to be 0.0024 M AgNO3 and 0.0040 1 MK2CrO4, what would be the value of Ksp? The value of Ksp would be larger. The value of Ksp would be smaller. The value of Ksp would be the same. O More information is needed to answer this question.

A 50.0 mL solution of Ca(OH)2 with an unknown concentration was titrated with 0.340 M HNO3. To reach the endpoint, a total of 28.4 mL of HNO, was required. Write the balanced chemical equation for the reaction 3C2 2- Reset 3 4 5 6. 7 8. -> (s) (1) (g) (aq) NO3 H Ca OH NO2 00 2.

An acid-base indicator, HIn, dissociates according to the following reaction in an aqueous solution. K. Hin HIn(aq) = In (ag)+ H* (aq) The protonated form of the indicator, HIn, has a molar absorptivity of 2777 M-1.cm-1 and the deprotonated form, In¬, has a molar absorptivity of 19024 M-1·cm-1 at 440 nm. The pH of a solution containing a mixture of HIn and In- is adjusted to 5.86. The total concentration of HIn and In- is 0.000184 M. The absorbance of this solution was measured at 440 nm in a 1.00 cm cuvette and was determined to be 0.884. Calculate pka for HIn.

The plot below is for the titration of 30.00 mL CH3COOH with 0.150M KOH: CH3COOH (aq) + KOH(aq) → CH3COOK(aq) + H2O(l). -> Titration of a weak acid with 0.150 M KOH solution 14.00 12.00 Hd 10.00 8.00 6.00 4.00 2.00 0.00 0.00 10.00 20.00 30.00 40.00 50.00 60.00 Volume of KOH (mL) What is the approximate molar concentration of the weak acid solution? [mol acid/volume of acid] You can use MAVA-MBVB. Answer: 0. (3 significant figures). Do not include the unit, M.

Please don't use Ai solution

An experiment was performed in order to determine the concentration of a persulfate ( S2O8^-2) solution   2 I^- (aq) + S2O8^2- (aq) —> I2 (aq) + 2 SO4^2- (aq)   A 25.00 mL aliquot of .1500 M KI solution was titrated to a purple blue endpoint with soduim persulfate as the titrant. The intial buret reading was 1.25 mL and the final buret reading was 15.78 mL. Calculate the concentration of the soduim persulfate.   Determine the oxidation number of iodine, sulfur, and oxygen in the reaction above and determine which species is oxidized and which is reduced.

A 270.00 mL solution of 0.00150 M AB4 is added to a 380.00 mL solution of 0.00250 M C3D4. What is pQsp for A3D4?