Farmers use ammonium sulfate as a fertilizer. In the soil, ni-trifying bacteria oxidize NH4+to NO3-, a groundwater contam-inant that causes methemoglobinemia (“blue baby” syndrome).The World Health Organization standard for maximum [NO3-]in groundwater is 45 mg/L. A farmer adds 210. kg of (NH4)2SO4 to a field and 37% is oxidized to NO3-. What is the groundwa-ter [NO3-] (in mg/L) if 1000. m3of the water is contaminated?

Q: a)Sodium thiosulfate, Na2S2O3, is used as a fixative in photography.  What is the oxidation number…

A: Oxidation state: It describes the extent of oxidation of an atom in a compound . It is an…

Q: The redox reaction between H2C2O4 (aq) and MnO4- (aq) in acidic produces Mn2+ (aq) and CO2 (g).…

A:

Q: Which of the carbonates given below is unstable in air and is kept in COa atmosphere to avoid…

A: Given Carbonates : (a) BeCO3 (b) MgCO3 (c) CaCO3 (d) BaCO3

Q: Gold is isolated from rocks by reaction with aqueouscyanide, CN-: 4 Au(s) + 8 NaCN(aq) + O2(g) +…

A: a) Given Reaction is 4 Au(s) + 8 NaCN(aq) + O2(g) + H2O(l)--------> 4 Na[Au(CN)2](aq) + 4…

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: (a) Neutralization of an aqueous solution of barium hydroxide by the hydronium ion (b) Reaction of 1…

A: Reaction are written in the form of equation is called chemical equation, in chemical equation ,…

Q: (2) 3luaai What mass of KMNO4 must be dissolved to prepare 1.25 L of O.110 N KMNO4 solution? (K =39…

A:

Q: The most important commercial ore of chromiumis chromite (FeC r 2 O 4 ). One of the steps in…

A: Given  Chemical reaction       2 C(s) + FeCr2O4(s) → FeCr2(s) +  2 CO2(g)…

Q: A sample of bleach has a content of about 2.13% (w/v) in “active chlorine”. For perform its analysis…

A: Given that, Molecular weight of NaClO = 74.45 g/mol Molecular weight of Cl2 = 70.90 g/mol

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: 1. Which two species will be able to oxidize Pb(s)?    Co³⁺ and Ce³⁺    Ca and Cr    Cd²⁺ and Cl₂…

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

Q: 2. Write the equations of the reactions. Write the electron balance and put the coefficients and…

A: The oxidation half-reaction and reduction half-reaction for the given reaction is shown in equation…

Q: Balance the reaction between Fe and NO3 to form Fe2+ and NO in acidic solution. When you have…

A: We are to balance the reaction Fe + NO–3  →    Fe+2 +  NO in an acidic medium.

Q: Consider the following redox reaction with nitrogen (N): NO3 + H* + 8e +→ _NH4* a. Balance this…

A:

Q: What element is oxidized and what is the oxidizing agent in the reaction below? Fe₂O₃(s) + 3CO(g) →…

A:

Q: A sample consisting of a mixture of Na₂SO3 and inert matter weighs 1.468 g and is added to 100.0 ml…

A: A question based on mole concept that is to be accomplished.

Q: During electrolysis of Copper (Cu), a 4A current is passed through electrodes for 2.5 hour.…

A: I = 4 A t = 2.5 hour = 2.5 X 3600 seconds

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: Question attached

A: Given: The first balanced reaction is, 2ClFg+O2g→Cl2Og+OF2g        ∆H°=167.5 kJ......(1) The second…

Q: is -25.0 kJ per mol 02. In the compound ZO(e), Z has a +2 formal charge. Which of the following…

A: Due to technical error ,unable to provide you the solution. Please resubmit the question once again

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: When the following skeletal equation is balanced under acidic conditions, what are the coefficients…

A:

Q: What species is the oxidizing agent in the reaction below? CIO + Cro, → CI¯ + CrO, 2- CI CrO, а. с.…

A: Oxidising agent: those species reduces itself and oxidise others are called oxidising agent.

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: Why is using gas as a fuel for power generation better than either oil or coal in terms of CO2…

A:

Q: Balance the reaction between Ni and HNO3 to form Ni²* and NO in acidic solution. When you have…

A: In this question, balanced chemical equation is to be written along with their coefficients and also…

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: Accounts for the following(i) Rusting of iron is quicker in saline water than in ordinary water.(ii)…

A: The process by which metals get converted into stable compounds like metal oxides, metal hydroxides…

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: What is the oxidation state of iron in K3[Fe(C2O4)3] ∙3H2O? Justify your answer.

A:

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

A:

Q: Complete and balance the following chemical equation: Ni (s) + H2SO4 (ap) -->

A: In electrochemical series, Ni is present above H. Hence, Ni can acts as reducing agent means Ni will…

Q: A solution of iron(II) sulfate was prepared by dissolving 10.00 g of FeSO4•7H2O (FW = 277.9) in…

A: Given data: Mass of  FeSO4•7H2O dissolved in water = 10.00 g, Volume of iron(II) sulfate solution =…

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: 2li+ Fe(c2h3o2)2-- 2li c2h3o2 +Fe Which is the reducing agent and why? How to find reducing agent…

A: Oxidation : A chemical change in which there is an increase in oxidation numberAn increase in…

Q: In basic solution, H2O2 oxidizes Cr³+ to CrO4²- and is reduced to OH. Write the balanced net ionic…

A: Balanced Net Ionic Equation: 2 Cr+3 + 3 H2O2 + 10 OH-1 ----------->  2 CrO4-2  +  8 H2O   From…

Q: The Haber process is the principal industrial route for converting nitrogen into ammonia: N21g2 + 3…

A: Oxidation is a process where the oxidation  number increases and reduction is a process where the…

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

A:

Q: A solution contains both NaI and NaBr. Which oxidizing agent could you add to the solution to…

A: Given: A solution contains both NaI and NaBr. To find: The oxidizing agent which selectively oxidize…

Q: A sample of pyrolusite weighing 0.6000 g is dissolved in a solution containing 5.00 mL of 6.00 N…

A: Given that 1 mL of KMnO4 oxidise 0.03058 g of FeSO4.7H2O…

Q: What is the oxidation state of Fe in the molecule Fe203?

A: The sum of oxidation states of individual species is equal to the charge on the species.  Let the…

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

A:

Q: A sample of a substance whose only oxidizable material is tin in the +2 state, is   titrated with a…

A: Titration- According to the definition of titration, it is "the method of estimating the amount of a…

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…

Q: How many moles of O2 are needed to oxidize 4.51 moles of CUFES2 in the reaction 2CuFeS2 + 5O2 —-> 2…

A: The balanced Chemical equation given in the question is - 2CuFeS2 + 5O2 —-> 2Cu + 2FeO+4SO2…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".