2Cr(OH)3 + 3CI→2Cr+ 3CIO+ 3H2O In the above reaction, the oxidation state of chromium changes from | to How many electrons are transferred in the reaction?

Q: Which of the following reactions will occur spontaneously? A. Au + K+ —> Au+ + K B. Al3 + Fe —> Al…

A: From electrochemical series,  In Spontaneous redox reaction  Element having higher reduction…

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

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Q: Balance this redox reaction using change in oxidation number. H3PO2 + Cr2O7^2- + H+ —> H3PO4 + Cr3+…

A: …

Q: : Circle the oxidizing agents and underline the reducing agents in the following reactions. 1. 2C+…

A: Identify the oxidizing agent and reducing agents in the given reactions.

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: C. Reactivity of metals: 1. Observations (Indicate whether the reaction occurred, the vigor, extent…

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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: Balance this equation using the smallest.       Cr2O3 +       C →       Cr +       CO2

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Q: Give one example each of(a) Thermal decomposition(b) Electrolytic decomposition(c) Photo…

A: (a) Thermal decomposition Example: Copper carbonate → copper oxide + carbon dioxide.

Q: In the reaction: IO3- + Re --> ReO4- + I- the Re is the _____________________ Select one:

A: In the reaction: IO3- + Re --> ReO4- + I- the Re is the _____________________

Q: The proper assignment of oxidation numbers to the elements in the polyatomic ion SO32- would be ?…

A: The oxidation number of an atom represents the number of electrons gained or lost with respect to…

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: 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: Which of the following reactions are REDOX? A 2 Na + Cl₂ → 2 NaCl B CH4+2O2 → CO2 + 2H2O C Fe2O3 +3…

A: Oxidation = increase in the oxidation state  Reduction = decrease in the oxidation state  Redox…

Q: A sample containing Fe 2* (MM=55.85) was acidified and treated with 0.0206 M KMNO 4 according to…

A: Assume the volume would be 1 litre. Moles = molarity×volume

Q: State the oxidation number on each element in the following compounds. (i) NaOH (ii) LiH (iii) NaCl…

A: Given compounds are : (i). NaOH (ii). LiH (iii). NaCl (iv). H2O2  State the oxidation number on each…

Q: C. Reactivity of metals: 1. Observations (Indicate whether the reaction occurred, the vigor, extent…

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Q: Which substance in the following reaction is reduced? Fe O,+2AI - Al;03+ 2Fe Select one: Oa. Al • b.…

A: Given reaction Fe2O3 + 2 Al → Al2O3 + 2 Fe Substance is Reduced if their Oxidation number is…

Q: How many amperes are required to deposit 0.291 grams of magnesium metal in 213 seconds, from a…

A: Given,  Mass of Mg metal deposited = 0.291 g  Molar mass of Mg = 24.305 g/mol  Time = 213 second

Q: How long would it take in minutes to plate 1.00 gram of silver to a watch when 9.2 amps are passed…

A: Mass of silver deposited = m = 1.00 g  Current passed I = 9.2 A Atomic mass of Silver M = 107.8682…

Q: Which of the following examples is/are an example of a redox reaction as is observed in the lab? all…

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Q: Consider the following reaction: Cu - Cu2+ + 2e- Which of the following best describes the reaction?…

A: a) Oxidation half reaction: In oxidation half reaction loss of electron (e-) take place and increase…

Q: Determine the reaction type for the following reactions2Al(s)+3 H2Soa(aq)----> Al…

A: In the given reaction, aluminium metal replaces hydrogen and gives aluminium sulphate. This is a…

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: Given reaction: 2Cr(s) + 3Pb2+(aq) →3Pb(s) + 2Cr3+(aq) we have to find the value of n ? value of n…

Q: Salt bridge Ag .02M Cu(NO,), 3M AgNOS .02M CuNOs Je(ag) .02M CulNNO, AgNOgcag) 3M

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Q: (27) What is the value of the equilibrium constant (Kea) when the following redox reaction takes…

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Q: When the equation for the following reaction in basic solution is balanced, what is the sum of the…

A: In the above reaction, Mn in MnO2 is in 4+ state and O in 2- state And finally in MnO4- , Mn is in…

Q: The photographs below (a) show what occurs when a solution of iron(III) nitrate istreated with a few…

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Q: The following reaction occurs in acidic solution. MnO, (aq) + HCOOH(aq) → Mn²* (aq) + CO2(g) What is…

A: We are given the following unbalanced chemical reaction in an acidic medium;…

Q: This reaction represents the titration from today's lab. 2 s,0,2- + 12 → + I, → S40,2- + 21- In this…

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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: The following reactions (note that the arrows are pointingonly one direction) can be used to prepare…

A: Halogens belong to Group 17 of the Periodic table. These are the most electronegative elements of…

Q: Silver tarnish is the result of the oxide on the silver surface reacting with hydrogen sulfide (H2S)…

A: (a) Balanced chemical equation for the reaction is given below.

Q: What are the oxidation numbers of the elements in the nitrite ion, NO2- ?

A: The formula for nitrite ion is NO2-.

Q: Describe the reaction Cu (s) + HNO3 (aq)  →

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Q: Which of the following indicates that the reactants are favored in a given redox chemical reaction?…

A: Answer:- This question is answered by using the simple redox reaction in which reactants are…

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: iii). The reducing agent for the forward reaction in: Mn²+ + Bi03 → MnO4 + Bi3+ is,

A: Given :-  Mn2+  +  BiO3- → MnO4-  +  Bi3+  To identify :-  Reducing agent in forward reaction

Q: Use the Potential-pH Diagram of Fe – H2O system to state the reactions the system undergoes and the…

A: Given : Use the potential-pH Diagram of Fe-H2O system to State the reactions the system undergoes…

Q: In 'Synthesis of an Iron Complex Salt', hydrogen peroxide (H202) is added to the solution and heat…

A: A complex salt is a combination of central metal surrounded by many neutral molecules. Iron forms…

Q: Dropping of zinc metal inside the aqua blue solution results to a reaction which reforms copper…

A: In displacement reaction one reactive elements displaces other elements in chemical reaction.

Q: Which is true about this reaction? CoCl- + 6H2O Co(H2O),* + 4CI- blue pink The formation of CoCl42-…

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Q: 7. Halide ion can be detected by adding aqueous silver nitrate AGNO3 solution followed by dilute…

A: element analysis in experimental chemistry is an important tool to detect the elements in the…

Q: What is the oxidation number of manganese in the permanganate ion, MnO4-?

A: Given: The ion is MnO4-.

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: 2. NH4NO3 is used as an explosive. Explain in terms of redox reaction chemistry.

A: Please find your solution below : Ammonium nitrate is a chemical compound used to make fertilizers…

Q: A cell is constructed by immersing a strip of lead in a 1.0 M Pb(NO3)2 solution and a strip of…

A: Reduction occurs at cathode a d oxidation occurs at anode. We will answer this question by choosing…

Q: 38. Consider the following reaction: H;(g) + Iz(g) =2HI(g) Complete the table. Assume that all…

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