Why does not silver evolve hydrogen on reacting with dil H2SO4

Q: Zinc is used but not copper for the recovery of metallic silver from the complex [Ag(CN)2 ]-,…

A: The reason why  Zinc is used but not copper for the recovery of metallic silver from the complex…

Q: 2: Calculate the oxidation number of chromium in Cr,0,².

A: Calculate the oxidation number of chromium in Cr2O72-

Q: What is the oxidation number of Cl in the hypochlorite ion?

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Q: Given the reaction: Fe*2 + C1207 2 - Fe*3+ cr*3 How many electon/s was/were gained in the reduction…

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Q: Provide the balanced net ionic chemical equation for the reduction of Fe3+ to Fe2+ by Sn2+

A: Given that : We have to provide the balanced net ionic chemical equation for the reduction of Fe3+…

Q: f Cl, and SiBr, were both liquids a 4

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Q: Write the chemical formula of 3 possible linkage isomers for [Fe(ONO)2(ox)2]4-

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Q: out of Sc^3+ ,  Ti^3+ , Mn^2+ , Fe^2+ which one is colourless in aqueous solution ?

A: The electronic configurations of the given ions are

Q: What mass of KMNO4 must be dissolved to prepare 1.25 L of 0.110 N KMNO4 solution? ( K =39 , Mn = 55,…

A: KMnO4 is an oxidising agent. When KMnO4 is used in the titration, it does not require any kind of…

Q: Write complete balanced half-reactions for (a) reduction ofnitrate ion to NO in acidic solution, (b)…

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Q: POSSIB Stainless steel consists mainly of iron and chromium. Why is stainless steel more useful than…

A: Given here stainless steel consists mainly iron and chromium and we areasked why stainless steel are…

Q: 6. Metallic Cd reacts Cd (s) + 2 I The enthalpy change assoc

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Q: What is the oxidation number of chromium in NazCr207?

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Q: n which of the following lanthanides oxidation state +2 is most stable? O Ce O Eu O Tb O Dy

A: The element and electronic configuration are shown below :

Q: What is the oxidation number of the Chromium atom in K2Cr2O7?

A: Oxidation number is the number of electrons gained or lost by an element.

Q: Describe giving reason which one of the following pairs has the property indicated : (a) Cr2+ or…

A: a) Cr2+ is a better reducing agent. As it attains a d3 configuration on losing an electron while…

Q: Please write the reactions of Zn, Fe and Cu metals with HCl and H2SO4 acids.

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Q: Given the reaction: Fe*2. Cr207-2 - Fe*3. cr*3 How many electon/s was/were involved in the oxidation…

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Q: Draw the structure of MnO2

A: Molecular geometry is the 3-D representation of the molecule in a space. As the Lewis model is not…

Q: What is the oxidation number of Fe in: FeOOH Fe2O3 Fe3O4

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Q: [Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3- is weakly paramagnetic. Explain. (At. no.…

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Q: Which of these would displace Fe in the substance FeSO, (ag) ? O a. Cu*2 b. Na +1 O o Cus) O d.…

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Q: The change in the oxidation state of the vanadium atom when VO* is converted into VO' is 28. A -2 B…

A: Welcome to bartleby!

Q: Determine the chemical equation for the reaction between Fe3+ and Cu2+ with NH3.

A: Ammonia is the weak base.  It is used in the aqueous form.  The reaction of ammonia with the given…

Q: What is the oxidation state of Z in HZO3?

A: The compound given is HZO3.

Q: What is the oxidation number of the chromium atom in K7Cr2O7?

A: Given-> I think there is  K2Cr2O7

Q: What is the oxidation number of the chromium atom in K2Cro4?

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Q: explain the preparation of K2Cr2O7 from chromite ore.

A: The first step of this conversion involves the reaction of chromite ore (FeCr2O4) with sodium…

Q: Given the reaction: 2Fe(s) + 3C12(g) --> 2FECI3(s) What is the oxidation state of the product iron?…

A: What is the oxidation state of Fe in FeCl3 ?

Q: How does the basicity of SnO₂ in water compare with thatof CO₂? Explain.

A: The molecules given are SnO2 and CO2.

Q: 0.5g of a metal gave on oxidation 0.7g of its oxide. The equivalent mass of the metal is [Options]:…

A: Correct Ans - B) 20 Mass of metal = 0.5kg Mass of metal-oxide = 0.7kg Mass of oxygen in oxide =…

Q: Assuming the 18-electron rule, identify the metal M in [M(CO),(PPh,)]. * PPH3 M..CO čo O Cr O Mn O…

A: Since there are two question, so I am solving question number 2 if you want to solve question number…

Q: why is [Co(NH3)6]3+ more stable with respect to reduction than [Co(H2O)6]3+

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Q: It was noted that H2O2 and NaOH was added to Cr3+ ion to test. What is responsible for its yellow…

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Q: Explain why a solution of [Ni(H2O)6]²+ is green but a solution of [Ni(CN)6]²- is colorless

A: Given that the solution of [Ni(H2O)6]2+ is green and the solution of [Ni(CN)6]2-. The color of the…

Q: Out of NH3 and CO2 which gas will be adsorbed more readily on the surface of activated charcoal and…

A: Adsorption: It is the phenomenon in which the adhesion of ions, atoms or molecules from as solid,…

Q: What is the oxidation number of As in: AsO43- AsO33-

A: Calculation of the oxidation number of As in AsO43- ------ Suppose the oxidation number of As = y We…

Q: What is the oxidation number of molybdenum in sodium molybdate (Na2MoO4)? (Sodium has an oxidation…

A: Sodium molybdate = Na2MoO4 Sodium(Na) has +1 oxidation number  Let x is the oxidation number of Mo

Q: Which of the following metals is least active? O Ca OK Pt O Li O AI

A: Given,

Q: Which of the following describes the reaction: 218 Po →°,e+ 218 At 84 ³Po→,e+ 85

A: In above reaction atomic number on product side increase by one while mass number remains unchanged.…

Q: What is the oxidation number for Xe in Хе02F2?

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

Q: Write the complete chemical equation of leaching Cuo in acidic solution which produces Cu²* ions.…

A: Leaching CuO in acidic solution which produces Cu2+ ions. We have to write the complete chemical…

Q: what is lanthanide contraction?

A: The elements having atomic number 57 that corresponds to lanthanum to atomic number 71 that…

Q: 8. What is the oxidation state of the vanadium atom in V02+ (aq)? (a) -2 (b) 0 (c) +2 (d) +4

A: Oxidation is the process that involved the loss of electrons and oxidized to cation whereas…

Q: Ammonia is added when preparing calcium ?oxalate. Why

A: Interpretation -  To tell about why ammonia is added to preparing calcium oxalate -…