93 Chemistry I Laboratory Manual, 2019 Revision Questions: 1o vaislom (E 1) Samples containing iron(II) ion can be titrated with solutions containing dichromate ion under acidic conditions. OcHS Cr20,2- + 6Fe2+ + 14H→ 2Cr³+ + 6FE3+ + 7H2O (a) Which ion is oxidized in this reaction? (b) Which ion is the reducing agent in this reaction? (c) If a 1.924 g sample containing iron(II) sulfate is dissolved and requires 36.1 mL of 0.0100 M K2C12O7 solution to titrate it, what is the percent iron(II) sulfate in the sample? Broxide on KHF HP is a on nt pri

Q: Determine if HNO3 can dissolve metal sample. If it can, writea balanced chemical reaction showing…

A:

Q: Identify oxidizing agent and reducing agent in the reaction   2Na2S2O3 + I2 → Na2S4O6 + 2NaI 2. N2…

A: Oxidizing agent is the species that oxidises other substance and itself reduces  Whereas reducing…

Q: A sample containing Fe2+ (MM=55.85) was acidified and treated with 0.0206 M KMnO4 according to this…

A:

Q: For a particular redox reaction, Cr is oxidized to CrO and Cu²+ is reduced to Cu*. Complete and…

A: Write the balanced redox reaction under basic condition---

Q: For the reaction 2 Cr(s) + 3 Pb²*(aq) - 3 Pb(s) + 2 Cr³*(aq), what is the value of n in the Nernst…

A: Oxidation is removal of electron and increase its oxidation state whereas in  reduction reaction…

Q: What is the oxidizing agent and reducing agent in the following reaction: Zn(s) + Cl2(g) →…

A: The given reaction is, Zn(s) + Cl2(g) → ZnCl2(s)

Q: A reaction that occurs during the corrosion of iron is A. Fe + 3,-→F¢3+ B. Fe2+ + 2e-→ Fe C.…

A:

Q: Identify the oxidizing and reducing agents in the reaction2 H2O1l2 + Al1s2 + MnO4 -1aq2 ¡ Al1OH24…

A: An oxidizing agent (oxidant), gains electrons and is reduced in a chemical reaction. It is also…

Q: Calculate the Kf of Ag(NH3)2+ from

A: For kf, the reactions arrangement -  Ag+aq+e⇔Ags...E∘=0.80 VAgs + 2NH3aq ⇔AgNH32++e-...E∘=-0.37VAdd…

Q: Iron(II) in aqueous solution can be oxidized, in the presence of molecular oxygen, to iron(III). In…

A: Affect of pH on oxidation of iron, The higher solution pH, the faster oxidation rate of ferrous ion…

Q: How many seconds does it take to deposit 1.63 g of Ni ona decorative drawer handle when 13.7 A is…

A: The time required to deposit 1.63 g of Ni on a decorative drawer handle when 13.7 A is passed…

Q: NO3– + MnO2 → NO2–+ MnO4– Identify the reducing agent.

A: Adding oxygen is called oxidation and removing of oxygen is called reduction

Q: An unknown metal, x, was placed in a solution of CuCl2(aq) and black solid appeared on the metal.…

A: The reactivity series is a series of metals, in order of reactivity from highest to lowest. It is…

Q: Write the balanced redox reaction of this: (Cr2O7)2- (aq) +I- (aq) = Cr3+ (aq) +I2 (aq) , in…

A: The question is based on the concept of redox reactions. we have to write balanced reaction of the…

Q: I'm not completely sure on how to do this question as a total

A: Oxidizing agent is a substance that can oxidize other substance and gets reduce itself.    Reducing…

Q: For the following reaction in aqueous solution, identify all those species that will be spectator…

A: Spectator ions are those species present on both sides of the total ionic equation and do not take…

Q: 1. A sample of pure sodium oxalate, Na,C2O4 , weighing 0.2856 g is dissolved in water, sulfuric acid…

A: This question is titration based question from redox chemistry where we will apply the concept of…

Q: How many seconds does it take to deposit 1.63 g of Ni on a decorative drawer handle when 11.8 A is…

A: The balanced half reaction

Q: [4] Balance the following redox reaction in basic solution. SO;2- (aq)+ Cr207 (aq) → Cr*(aq) +…

A: Redox reaction is combination of both oxidation and reduction

Q: The following skeletal oxidation-reduction reaction occurs under acidic conditions. Write the…

A:

Q: II. Identify oxidizing agent and reducing agent in the reactions. 1. 2Na2S2O3 + I2 → Na2S4O6 + 2NaI…

A:

Q: Identify the oxidation agent and reducing agent in the following reaction (equations may not be…

A:

Q: the reaction that occurs during iron corrosion is: a) Fe + 3e- = Fe3 + b) Fe = Fe2 + + 2e- c) Fe2 +…

A: Given : Corrosion of iron.

Q: Why are there pieces of tin metal on the bottom of the SnCl2 reagent in the redox analysis of iron

A: Stannous Chloride (SnCl2) is a reducing agent that reduces Fe3+ to Fe2+ in the analysis of iron. The…

Q: When the following redox reaction is balanced in acidic conditions, how many H2O are there in the…

A:

Q: Q1) a) What is i) a standard solution? ii)a reduction-oxidation (redox) reaction? b) A standard…

A: a) i) If the strength of the solution is known then it is a standard solution.  ii) Redox reaction…

Q: 4

A: Given information: N of Na2C2O4  =0.75 N V of Na2C2O4  =15.0 mL V of KMnO4 = 16.7 mL

Q: 6.) Which species functions as the reducing agent in the following reduction-oxidation reaction?…

A: Given    Reaction      ZnO(s)  + C(s)  →  Zn(s)  + CO(g) Reducing agent = ?

Q: Which of the following reactions will occur spontaneously as written?   A. 3Fe2+(aq) + Cr3+(aq)…

A: The relationship between ΔGo and Eo is shown below,ΔGo = -nFEo

Q: A 0.8040 g sample of an iron ore is dissolved in acid. The iron is then reduced to Fe²+ and titrated…

A:

Q: A. Acidic Medium Mno, + c,0, Mn co, Balanced equation: Oxidant: Reductant:

A:

Q: Identify the unbalanced half-reaction in which a species is reduced. C(s) → CO(g) Al(s) Al3+(aq)…

A:

Q: Q1/Determine the corrosion rate of carbon steel in salt solution from the following laboratory data.…

A:

Q: What would the redox reaction, Cr(OH)3 + Br2 → CrO42− + Br−, be in a basic environment? Balanced…

A:

Q: Given that sodium oxalate is dissolved in a flask and is titrated to its equivalence point with 30…

A:

Q: II. Identify oxidizing agent and reducing agent in the reactions. 1. 2Na2S203 + I2 Na2S4O6 + 2Nal 2.…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three…

Q: In the following chemical reaction the oxidizing 5H2O2 + 2MNO4 + 6H*2MN2+ + 8H20 + 50z a) O2. b)…

A: From giving chemical equation first identify where oxidation and reduction taking place.

Q: Calculate the value of Kedox for each of the following reactions: a. Fe + Ni* Ni + Fe 2* b. Sn2* +…

A: The relationship between standard emf ( E° ) and equilibrium constant ( K ) is given by  E° =…

Q: Circle the oxidizing agents and underline the reducing agents in the following reactions. a. 2C +…

A: We have to tell about the oxidising agent and reducing agent in given reactions.

Q: Balance the following equation which takes place in acidic solution. Cr20-2-+ - Cr3+ + 103

A:

Q: Write a balanced redox equation assuming the reaction takes place in acidic solution. H2O2 + Fe2+…

A:

Q: Iron concentrations greater than 5.4 x 10° M in water used for laundry purposes can cause staining.…

A: Given concentration of iron , [Fe2+] = 5.4×10-6 M  Ksp of Fe(OH)2= 7.9×10-15

Q: During the demonstration, before each metal was added to the water, a drop of an acid-base…

A: Indicator is used to indicate the ending point of the titration .

Q: Identify the unbalanced half-reaction in which a species is reduced. Cr,0,(s) → Cro (aq) C(s) →…

A: When oxidation state is decreasing, it is called reduction.

Q: Cr2072- + 6S203²- + 14H* → 2Cr3+ + 3S406²- + 7H20 What is the reducing agent here?

A: Those chemical species that lose their electrons during the reaction to reduce other atoms are known…

Q: Calculate the Free Gibb’s Energy, kJ/mol, for the following redox reaction at 25.0°C. 2Ce4+(aq) +…

A: Given  The following redox reaction is - 2Ce4+ (aq) + 2Cl- (aq) →Cl2 (g) + 2Ce3+(aq) anode - 2Cl-…

Q: Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox…

A: The balanced redox reaction can be written as follows-

Q: 1. Cu(s) | Cu2+ (0.05 M) || Cu2+ (1 M) | Cu(s) 0.039 v Calculation for E (cal.) (eq. 11): EO-0.0592…

A: a) The Ecell is to be calculated. b) The situation of the concentration of 0.05 M solution has to be…

Q: A technician is plating a faucet with 1.26 g of Cr from an electrolytic bath containing aqueous…

A: