a)Sodium thiosulfate, Na2S2O3, is used as a fixative in photography.  What is the oxidation number of each of the elements in sodium thiosulfate (NOTE – the two sulfur atoms do not have the same oxidation state)? b)What is the oxidization number of Co in K3(CoF6)

Q: 2- What is the oxidation number of chromium in the dichromate ion, Cr2 O7 ? +3 +8 O+12 O+2 O+6

A: Let the oxidation number of chromium be x and oxidation number of oxygen is -2 We know that addition…

Q: Calcium metal can be obtained by the direct electrolysis of molten CaCl2, at a voltage of 3.2 volts.…

A: Given data: Given voltage = 3.2 volt Atomic weight of Calcium = 40.078 g/mol

Q: One of the semi-reactions in water electrolysis is 2H2O (l) -> O2 (g) + 4H + (aq) + 4e- If 0.076 L…

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Q: At 900 0C titanium(IV) chloride vapour reacts with molten magnesium metal to form solid titanium…

A: TiCl4​(l)+Mg(s)→Ti(s)+MgCl2​(s)

Q: How many grams of Cr would plate out from a solution of Cr(NO3)3 when 9.65 × 105 coulombs of charge…

A: Since Cr is initially in Cr3+ state in  Cr(NO3)3  Hence the reaction for Cr3+  is  Cr3+  + 3 e-…

Q: What is the oxidation number of nitrogen in NO2, N2O, HNO3 ?

A: The species formed after electrons transfer acquire definite charge and it is represented by their…

Q: What is the oxidizing agent in the reaction Zn + 2 H⁺ → Zn²⁺ + H₂?

A: An oxidizing agent, gains electrons and is reduced in a chemical reaction. The oxidizing agent is…

Q: Copper corrodes to cuprous oxide, Cu2O, or cupric oxide, CuO, depending on environmental…

A: The oxidation state of copper in cupric oxide is to be calculated

Q: Balance the reaction, do not leave any fractions, don't leave anything blank, then answer the…

A: The given unbalanced reaction is: _______ Mo2O3   →  _________  Mo   +   __________ O2

Q: 18) What is the oxidation number of sulfur in the sulfite ion, SO32–?

A: Oxidation number or the oxidation state is number of electrons that the atom of an element either…

Q: The oxidation number of chromium in sodium chromite, NaCrO2, is  A. -1  B. -2  C. +2  D. +1  E.…

A: The compound given is NaCrO2  Since Na is a alkali metal. And alkali metals always forms ions by…

Q: What specific features qualify hypochlorite as a "Green" oxidant?

A: Green oxidation: The oxidation process in which O is added or H is removed from substrate leading to…

Q: Water can decompose into H2H2 and O2O2 via electrolysis. How many moles of H2H2 could theoretically…

A: 2.24 moles of H2H2 could theoretically be obtained from 80.6 g water.

Q: What is the oxidation number of phosphorus in KH2PO4?

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we…

Q: Magnesium reacts with oxygen to form magnesium oxide according to the following reaction: 2 Mg + O2…

A: • Calculation of oxidation Number follow the          following rule :-i oxidation No. of free…

Q: Given the reaction: Fe2++ Cr2O72- → Cr3+ + Fe3+ (acidic) How many electrons were lost by…

A: A balanced chemical reaction helps us determine the amount of reactant being consumed and the amount…

Q: In the production process of copper described by the Pyrometallurgical Smelting Method, __ is used…

A: Copper extraction refers to the methods in which copper is obtain from its ores. The conversion of…

Q: Use oxidation numbers to show that the production of iron metal from its ore 1Fe2O32 by reaction…

A: Redox reactions are the combination of reduction and oxidation reactions. The type of reaction in…

Q: Which of the following statements are true?(a) Si can form an ion with six fluorine atoms,…

A: The true statements have to be identified.

Q: If you began with 24 moles of Fe203, approximately how many moles of pure iron would be formed as a…

A: Given :-  2 Fe2O3 + 3 C ----> 4 Fe + 3 CO2  Number of moles of Fe2O3 = 24 mol  To calculate :-…

Q: Sulfur dioxide is a reducing agent. When it is bubbled through an aqueous solution containing Br2, a…

A: The balanced chemical equation for the reaction is given below.

Q: How many metric tons of charcoal is required to reduce 1500 kg of arsenic trioxide? AS2O3 + C = CO +…

A:

Q: What is the reducing agent, in the smelting of iron from iron oxide? Fe2O3 (s) + 3CO (g) à 2Fe (s) +…

A: The given smelting equation : Fe2O3 (s) + 3CO (g) → 2Fe (s) + 3CO2 (g)

Q: 4. How many grams of zinc are produced by treating 81.0g of aluminum with an excess of aqueous zinc…

A: As per electrochemical series, more reactive metal displaces the less reactive one from its salt.Out…

Q: What is the oxidation number of the sulfur atom in Li 2SO 4  ?

A: Given :- Li2SO4 (an ionic compound)  To be determined :- oxidation number of S atom  O has charge -2…

Q: Is Zn+2AgNO3>>>Zn(NO3)2+2Ag an oxidation-reduction reaction? If so, what is oxidized and what is…

A:

Q: A sample of impure tin of mass 0.524 g is dissolved in strong acid to give a solution of Sn2+. The…

A: The point at which equivalent of an acid becomes equal to equivalent of a base in the presence of…

Q: Controlling the concentration of ammonia is one of the biggest problems in maintaining a healthy…

A: The given chemical equation for oxidation of ammonia is: NH3 (aq) + O2 (aq) → NO3- (aq)We have to…

Q: Write a balanced redox reaction for the formation of rust on iron metal and identify the correct…

A:

Q: Which element is oxidized in the reaction?   Fe2O3 + Al →Al2O3 + Fe

A: Which element is oxidized in the reaction? Fe2O3 + Al →Al2O3 + Fe

Q: O An oxidizing agent gains electrons. O An oxidizing agent causes another species to be oxidized. O…

A:

Q: Which statement is true for the following reaction: Fe203 + C - Fe + CO2 O Fe203 is the reducing…

A:

Q: Which of the following elements is capable of oxidizing Fe2+1aq2 ions to Fe3+1aq2 ions: chlorine,…

A: In order to oxidize Fe2+ to Fe3+, the other element must undergo reduction. The other element will…

Q: A clean iron nail is dipped into a solution of silver nitrate. Using your knowledge of the…

A:

Q: In the blast furnace, iron is formed when iron(III) oxide reacts with carbon monoxide in a redox…

A: From the given reaction, which is oxidising and reducing agent has to be identified.

Q: Copper corrodes to cuprous oxide, Cu2O, or cupric oxide, CuO, depending on environmental conditions.…

A: It is given that copper corrodes to cuprous oxide i.e. Cu2O or cupric oxide i.e. CuO, and the…

Q: Pls help ASAP

A:

Q: Electric generating plants transport large amounts of hot water through metal pipes, and oxygen…

A:

Q: What element is oxidized in the following chemical reaction? H2SO4 + Cd(OH)2 → 2H2O + CdSO4

A: Given: H2SO4 + Cd(OH)2 ------> 2H2O + CdSO4

Q: 22 ent, when present in large amounts, causes steel to become brittle and unworkable:

A:

Q: O3- is an oxidizing agent  that oxidizes :     KI to I2     I2 to I-     S2O3- to I

A:

Q: Show how to calculate the oxidation number of vanadium after being reduced by So2 according to the…

A: When vanadium is reacted with  SO2  then vanadium  acts as catalysts and It have tendency to change…

Q: 1. Given the following reaction, identify the species that is oxidized. 5CO + 1205 s 2 + 5CO2 а. СО…

A: 1.

Q: Which one of the following items does NOT characterize an oxidizing agent? A An oxidizing agent…

A: The property of an oxidising agent is to oxidise the other species by itself undergoing reduction…

Q: Sodium bismuthate (NaBiO3) oxidizes MnCl2 to MnO4 ̶  and is consequently reduced to Bi(OH)3.  How…

A: The complete balanced reaction is given by  Hence from the above reaction we can see that 3 moles…