What would happen to the Fe2+ concentration if a reduced sample was exposed to lab air for too long

Q: In the reaction below, which species is the reducing agent? Ni(C 2H 3O 2) 2 (aq) + Mg (s) -> Mg(C 2H…

A: The reducing agent can be defined as an oxidation process wich loses electrons. In other words, the…

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: What is the value of the equilibrium constant for the reaction between each pair at 25°C? (a) Al(s)…

A: Standard Gibbs free energy : It is the change in chemical energy required for 1 mol of a substance…

Q: Identify the oxidizing agent and the reducing agent in the following reaction: Cr2O3(s) + Al(s) >…

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

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Q: Identify the species being reduced in the following reaction Fel3 Mg Fe + Mgl2

A: The species which is being reduced can be determined after knowing the species which is undergoing…

Q: 10. What color is does litmus paper turned when dipped into an acidic solution? * А. гed B. blue C.…

A: A litmus paper helps in the distinction of the solution. It helps in differentiating whether the…

Q: standard reduction potential.

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Q: Which ion can be most easily reduced? O a. Zn2+ O b. Ca2+ O c. Cu2+ O d. Fe2+

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Q: What is the reducing agent in the following reaction? 4HCl + MnO2 → Cl2 + 2H2O + MnCl2

A: Given : The balanced chemical equation.  To find : Reducing agent in the reaction.  Solution : As we…

Q: Given the reaction: Fe*2 + Cr207 -2 - Fe*3 + Cr*3 Which is the reducing agent? Cr*3 -2 Cr207 Fe*2…

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Q: What is the reducing agent in the reaction, 3CUCI2(aq) + 2AI(s) -> 3Cu(s) + 2AICI3(aq

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Q: 60 Cu. DFe (a, B) Cu. 26

A: The balanced radioactive Chemical equation is as follows.

Q: Zn is higher than Cu on the Activity Series.  H is between them. A. Cu will cause H2 to form if…

A: In activity series on moving upward electropositivity of metal increases and the metal shows more…

Q: Write the balanced net ionic equation for the reaction of Cl- and AgNO3. Explain, in your own words,…

A: AgNO3 + Cl- --------------> AgCl + NO3- . Is the redox reaction taking place above. Equilibrium…

Q: Formation of a red color upon addition of KSCN confirms the presence of which metal: aluminum,…

A: Formation of a red color upon addition of KSCN confirms the presence of iron metal.

Q: Given the reaction: Fe +2+ Cr₂07-2Fe +3 + Cr*3 Which is the reducing agent? O Cr+3 O Cr₂07 7-2 O Fe…

A: The substance which oxidises others but itself reduced is called oxidising agent. The substance…

Q: Identify the oxidizing agent and the reducing agent in the following reaction. Fe + 2Ag+ à Fe2+ +…

A: Fe + 2Ag+ ---------> Fe2+ + 2Ag

Q: 33. Which substance is the reducing agent in HF + Cl, → F2 + HCI? А. HF B. Cl2 С. F2 D. HCI E. H20…

A: Reducing agent: A reducing agent, loses electrons and gets oxidized in a chemical reaction.  In the…

Q: If zinc is less reactive than magnesium chloride, what is the equation that occurs when zinc is…

A: Given :-  Zn is less reactive than MgCl2  To determine:-  Equation of Zn with MgCl2

Q: 0.7682 g MgCO3 is dissolved in 1000 mL water, 50 mL of this solution is taken and titrated with…

A: • Since, here is given that MgCO3 is taken as 0.7682 gm and its aqueous solution has been made in…

Q: Iron nail clipped in a solution kept in a test tube. After half an hour it was observed that the…

A: Given solutions,    (a) Zinc sulphate   (b) Copper sulphate   (c) Iron sulphate   (d) Aluminium…

Q: Does a change in pH of the soil affect the Mn availability? Use chemical equations to illustrate…

A: Interpretation - We have to illustrate that a change in pH of the soil affect the Mn availability -…

Q: D-2: Copper + Zinc Sulfate 51. Observations on combining Cu metal with 0.1 M ZNSO, solution:…

A: Observations: ZnSO4 + Cu  ->  Zn + CuSO4 is an example of displacement reaction. In the above…

Q: List the (i) metal oxidation state, (ii) d-electron count, and (iii) total electron count for each…

A: Here we will use neutral method to calculate total electron count in the molecule. We have to…

Q: Arrange these species by their ability to act as an oxidizing agent. Best oxidizing agent Best…

A: The following characters of the best oxidizing agent are as follows: Best Oxidizing Agent: atoms…

Q: rite a balanced equation for the reaction m and zinc metal to yield zinc(I) and chromium(III) in…

A: Balance chemical equation is defined as which has equal number of atoms or ions in both sides…

Q: List the (i) metal oxidation state, (ii) d-electron count, and (iii) total electron count for each…

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Q: 2. Write the redox half reaction for oxidation of phenol (CH;OH) to carbon dioxide, and combine this…

A: Answer:- This question is answered by using the simple concept of writing the balanced chemical…

Q: 1. predict the products for the following reactions and then identify the reducing agent Zn + Hcl…

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Q: Assign oxidation numbers to each element and balance the equation in an acidic solution.  Cr2O72- +…

A: The balanced equation in acidic medium is given below

Q: What is the color of Methyl Orange in Caustic Potash?  a. Red b. Deep Blue c. Faint pink d. Faint…

A: What is the color of Methyl Orange in Caustic Potash?

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: How many grams of AgBr can be dissolved in 500mL of 2.5M NaBr? (Ksp = 7.7x10-13)

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Q: 20. An excess of AgNO3 reacts with 185.5mL of an AlCl3 solution to give 0.325 gof AgCl. What is the…

A: Volume of solution (V) = 185.5 mL Mass of AgCl = 0.325 g

Q: Which methods are usually employed for purifying the following metals :(i) Nickel (ii)…

A: Metals are purified to remove the impurities from crude. After extraction from crude, there is about…

Q: Below is the reaction that converts copper ions to copper metal: Cu ions + Cl + Al foil Cu + Cl + Al…

A: Al very reactive but due to presence of oxide layer  showing less reactive when addition of  dil…

Q: Predict which species will be oxidized and which will be reduced in a molten salt mixture that…

A: The available species for oxidation and reduction are: Cd2+, I-, Na+, OH-, Al3+ and Cl-.

Q: Given the reaction: Fe+2 + Cr2O7 -2 → Fe+3 + Cr+3 Which is the reducing agent?…

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Q: Calculate the no. of amperes necessary to deposit 84.5 g of nickel from a solution of NiCl 3 in 45.0…

A: The given problem can be solved by using Faraday's first law. This law states that the mass of a…

Q: If we added AgNO3 to a sample containing KI. The chemical change observed in the test is Select…

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Q: Identify the oxidizing agent and the reducing agent in the following reaction. Mg + I2 à MgI2

A: The chemical equation :  Mg + I2  ----> MgI2  Identity the oxidising agent & reducing agent…

Q: predict if a reaction will occur when Cu metal is put into a 1M aqueous Fe* solution.

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Q: veakest reducing agent.

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Q: Give the oxidation number of each element in the following complex salt. [Cr (NH3)s Br] SO4

A: Given :- chemical formula of complex salt = [Cr(NH3)5Br] SO4  To determine :- oxidation no.of each…

Q: a. An 18-mg strip of magnesium metal reacts in 5.0 mL of 3.0 M HCI over a given time period.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A copper(II) sulfate solution of unknown concentration is placed in a colorimeter and an absorbance…

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Q: Using Le Châtelier's principle, explain what happens if Fe3+(aq) ions are added to the following…

A: Le chatelier principle :  It states that when in a given equilibrium ,any type of disturbance occurs…

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…