13. Which of these substances are used in the reduction of metal ores? I. CO II. С III. O2 IV. H2 a) I only b) П only c) III only d) I and II e) I, II and III oothod

Q: Balance the following redox reactions using the half-reaction method. Mg+Al+3Mg¹2 + Al H₂O2+…

A: Oxidation-Reduction One reactant is simultaneously oxidized and reduced in a reaction, also known as…

Q: 3. Which eleme nt is oxidized (Re ducing agent), and which is reduced (Oxidizing agent) in the…

A: (a)The elements which are oxidized and reduced in the reaction are

Q: what is the oxidation number of S in H2SO4 ____ and S in H2SO4 b.) what is the element that is…

A:

Q: Balance the following redox equation in basic solution.  What is the coefficient of the hydroxide…

A: The given reaction is an example of a redox reaction. In redox reactions oxidation and reduction…

Q: What is the oxidation number of each element present  in the following compounds A. NF3 B. HNO3…

A: Answer:- This question is answered by using the simple concept of determination of oxidation state…

Q: Balance the following redox equation in acidic solution.  What is the coefficient of the H + ion?…

A: Balance the following redox equation in acidic solution.  What is the coefficient of the H + ion?

Q: Identify the correct coefficients for the reaction: i SO₂+ii Li₂Se → iii SSe₂ + iv Li₂O A. D. i=1,…

A:

Q: Assign oxidation numbers to all atoms in each of the following. a) PbSO4 b) Cr2O3

A: Oxidation number of oxygen is -2 oxidation number of sulfur is +6

Q: The overall reaction of the silver oxide battery, which is used in watches, may be written as Ag2O +…

A: Electrode in which reduction takes place is known as cathode and an electrode where oxidation takes…

Q: If the oxidation number of Mn in MnO4 is +7 in the following chemical reaction, then MnO4 is; 5H₂O2…

A: The objective of the question is to determine the role of MnO4 in the given chemical reaction based…

Q: 122. What is the oxidation number of iodine in I2. A) -1 B) 0 C) +1 D) +7 E) None of the above is…

A: The oxidation number of an atom is zero in a neutral substance that contains atoms of only one…

Q: Complete and balance the following reactions - assume they all go a. solid ferric oxide plus water…

A: Chemical formula of ferric oxide is Fe2O3  Chemical formula of silver nitrate is AgNO3  Chemical…

Q: Aluminum metal is oxidized into aluminum (III), while the copper (II) is reduced. Write three…

A:

Q: 12. Which of these methods are utilized to help prevent the rusting of iron? I. Painting iron II.…

A: Rusting is slowly eating down of metallic surface of iron by aerial oxygen and moisture. It is…

Q: In the balanced redox reaction below, label the following: 2Bro, (aq) + 3N,Ha(g) → 2Br (ag) + 6H,0()…

A: Redox reaction are those reaction in which both reduction as well as oxidation of a species taies…

Q: Q3. Determine the oxidation number of the Chromium (Cr) in an unknown salt if electrolysis of a…

A: The objective of this question is to determine the oxidation number of Chromium (Cr) in an unknown…

Q: Which of the following metals would be oxidized if exposed to an aqueous solution of Al3+ ions? a.…

A: In this question, we will Identify Oxidized metal in the Al3+ Solution.  How we can identify, you…

Q: Calculate the oxidation number for each element within the compound KNO2

A:

Q: Q3. Determine the oxidation number of the Chromium (Cr) in an unknown salt if electrolysis of a…

A: Above question can be solve by following relation W=ZitZ= MM/nfMM molar mass

Q: 1) Determine the oxidation number for the indicated element in each of the following substances: a)…

A: An oxidation number, also known as an oxidation state, is a number assigned to an atom in…

Q: Complete and balance the following half-reactions. Cr* (aq) Cr**(aq) а. b. Hg(1) + Br HgBr MnO2(s)…

A:

Q: E. CO and NO 18. Which is the reducing agent in, Cu (s) + 2Ag* (aq) → Cu²* (aq) + 2Ag (s)? A. Cu²+…

A: Concept An increase in oxidation number- species is oxidized. A decrease in oxidation number-…

Q: Balance

A:

Q: What is the oxidation state of chromium in chromate?

A: Chromate is the species formed by chromium that has the formula CrO42- . We need to find the…

Q: Tube 1     Tube 2    Tube 3 Mn initial oxidation state: +7           +7            +7 Mn final…

A: Given,  The number of electrons gain by Mn in  Tube 1      Tube 2     and Tube 3  is:

Q: question 53 Consider the unbalanced reaction below, which occurs in an acidic aqueous solution.…

A: Given -> MnO4- + Cl- ----> Cl2 + Mn2+ -> In oxidation there is increase in oxidation state…

Q: For the following reaction of solid aluminum and aqueous copper (II) sulfate please write, a.…

A:

Q: alance the following redox equations. a. MnO4- + I- + H+ -> Mn2+ + I2 + H2O b. ClO4- + I- + H+ ->…

A: Given skeletal redox equations are: a. MnO4- + I- + H+ → Mn2+ + I2 + H2O  b. ClO4- + I- + H+ → I2 +…

Q: Balance the following equations using the oxidation number method. Balance the first equation in an…

A:

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: 1. Balance the following redox equations using the half-reaction method: a. N₂H4 + KBrO3 → N₂ + KBr…

A:

Science behind corrosion-test

Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.

Corrosion

Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.