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Oxidation number of Cl in HClO4 = ?

Answered: The oxidation number of Cl in HCIO4 is

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter18: Introduction To Electrochemistry

Section: Chapter Questions

Problem 18.8QAP

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Enter your answer in the provided box. Calculate the emf of the following concentration cell: Mg(s) IMg2+(0.25 M) | Mg2+(0.78 M) |Mg(s)
The iodine produced when excess of KI was added to the solution containing 0.1259 g K2Cr2O7 required a 41.26 mL titration with Na2S2O3 required a 41.26 mL titration with Na2S2O3. P.S. Be able to answer numbers 1 and 2 ONLY. 1. Determine if it is basic or acidic and write the balance redox reaction for the reaction of dichromate ion with iodide ion in acidic medium. Unbalance equation: Cr2O72- (aq) + I- (aq) → Cr3+ + I2 (aq) 2. Determine if it is basic or acidic and write the balance redox reaction of iodine with sodium thiosulfate in acidic medium. Unbalance equation: S2O3 2- (aq) + I2 (aq) → S4O6 2- (aq) + I- (aq) 3. (i) What are the oxidizing agents in #1 and #2? (ii) What is the stoichiometric ratio between dichromate and thiosulfate? 4. Calculate the molar concentration of the thiosulfate solution.
Calculate amount of amperes that are needed to deposit 0.001 mole Zn by electrolyzing 100.0 mL of 1.0 M ZnSO4 for 30 seconds? 643.3 A 6.43 A 64.3 A 6433 A
State whether the OVERALL reaction is Oxidation/Reduction or neither for reaction Iand II.
1. Name the products formed in a permanganate titration (FAS Vs KMnO4)? 2. Give reason Why Burning of coal is an example for redox reaction? 3. Name the indicator which we used in a permanganate titration? 4.Give reason For not keeping Potassium permanganate solution in Colorless bottles?
This is a question about balancing oxidation reduction reactions for CHM-152
A 50.0-mL aliquot of unknown Cu(II) solution was exhaustively electrolyzed to deposit all copper on the cathode. The mass of the cathode was 15.327 g prior to electrolysis and 16.414 g after electrolysis. Find the molarity of Cu(II) in the unknown.
Why is it not possible for hydroxide ion (OH-) to appear in either of the half-reactions or the overall equation when balancing oxidation—reduction reactions in acidic solution?
4 If the glass and reference electrode are immersed in a buffer solution pH = 3.56 ,the electrode voltage was = -0.111V. when the two electrodes immersed in unknown solution , it was found that the voltage of the glass electrode = -0.041V. Calculate the pH of the unknown solutionUnknown
Identify the oxidation number of the underlined atom only in C2H3O2-.
How many grams of nickel (58.69 g/mol) may be electroplated by passing a constant current of 7.2 A through a solution of NiSO4 for 34 min? Please report 1 decimal place. F= 96485 C/mol
answer number 5 only. identify the RA and OA and balance the reaction. complete solution is a must.

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