1. Balance the following reaction: Cr + O2 -> CrO3

Q: Which of the reagents would oxidize Cr to Cr +, but not Fe to Fe3+? Со Са Br Br, Ca²+ Co2+

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Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…

A: Amount of limonite = 0.5166 g 42 96 ml of 0.0213 M Na2Cr2O4 is added in the titration. Molar mass of…

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: Determine the oxidation state and the dn configuration for Pt in [PtCl2(PME3)2].

A: The coordination complex is the complex in which the central metal atom is bonded with the ligand by…

Q: Complete and balance the following equations. If no reaction occurs, write NR:(a) I2(s) + H2O(l)…

A: The given equations have to balanced and completed.

Q: Question 3a and 3b

A: Products and balance of the equation will be:

Q: 1- Explain the bonding nature of [Fe(CN)5 (NO)]-2 linear NÓ ligand.

A: The given complex [Fe(CN)5(NO)]-2 is an organometallic complex where the central metal atom is iron,…

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A: The final step in the smelting of FeCuS2 is  Cu2S(s)  + 2Cu2O(s) --> 6Cu(l) + SO2(g) (a) For…

Q: A sample of iron ore weighing 0.6428 g is dissolved in acid The iron is reduced to Fe*? and titrated…

A: Note - The concentration value for K2Cr2O7 is incorrect. It has to be 0.01052 N instead of 0.1052 N…

Q: Describe a spectroscopic method to determine the oxidation states of transition metals.

A: The oxidation state of transition metals can be conveniently determined by various spectroscopic…

Q: What is the structure of CrO5 and what is Oxidation number of Cr in this compound?

A: The chemical structure of CrO5 is drawn as,

Q: Predict the products of the following reactions and balance the equations.(a) Zn is added to a…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Determine the oxidation state and coordination number of [Cr(H2O)6]3+, [Co(NH3)3Cl3]-, & [Cu(CN)4]2-

A: The oxidation state and coordination number of given complexes has to be determined.

Q: Which of the following would serve as the best reducing agent for Fe2 (aq) to produce iron solid?…

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Q: (a) Why do transition elements show variable oxidation states? (i) Name the element showing maximum…

A: a) Transition elements show variable oxidation state because their valence electrons in two…

Q: Predict the products of each of the following reactions and then balance the chemical equations.(a)…

A: Since you have posted a question with multiple sub-parts, we will solve first five sub-parts for…

Q: Draw the chemical structure below and explain the oxidation state of metal central and the charge of…

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Q: Solutions of the iron(lll) – containing ionic compounds Fe2(SO4)3 and FeCl3 are yellowish in colour.…

A: In this question, the reason for deep brown color of Fe(MnO4)3 is to be determined while Fe2(SO4)3…

Q: Explain why [FeF6]³- is colorless whereas [COF6]³- is colored but exhibits only a single band in the…

A: The ligands which produces greater splitting in d orbitals are known as strong field ligands. The…

Q: Which of the following elements is most likely to be used to prepare La by the reduction of La2O3:…

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Q: c) Quenching is employed to harden metallic materials. i. Explain the process of transforming PLAIN…

A: 1. Answer - Martensitic transformation - Martensitic transformation of shape memory alloys is a…

Q: Which iron species will have the greatest propensity to bond to carbon monoxide (remember CO binds…

A: Transition metals can form coordination complexes with carbon monoxide ligands using synergistic pi…

Q: What ions are present in solution? Write a balanced equation for the reaction of K(s) with H2O(1).…

A: Chemical equation is the equation in which the chemical reaction is represented. All the reactant…

Q: MnO−4 reacts with Fe2+ in acid solution to produce Fe3+ and Mn2+.  Write a balanced equation for…

A: From the given information, the half reactions are, Oxidation half reaction is, Reduction half…

Q: Question is attached

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Q: Why is CO considered poisonous ?

A: CO is tasteless, odourless , colorless gas. It is slightly denser than air. IT is consisted of one…

Q: what is common oxidation state of lanthanides? and why ?

A: The general electronic configuration of lanthanides is [Xe]4fn5d0-16s2.Lanthanides have incomplete…

Q: Give the oxidation state of the metal, number of d electrons, and the number of unpaired electrons…

A: Oxidation state of metal: x + 0 -3 = 3 x = 3 oxidation state of cobalt is +3. Electronic…

Q: Why do transition elements show variable oxidation states? How is the variability in oxidation…

A: The transition elements have the incompletely filled d-orbitals and furnish the cation by the…

Q: 23. Table 4 shows various oxidation states and colours of vanadium ions and complexes. * Table 4 Ion…

A: The oxidation state of vanadium is calculated based on the following rules: I) elements are in zero…

Q: >Why does Mn form compounds with higher oxidation states than Cr?

A: The electronic configuration of Mn is 1s22s22p63s23p63d54s2.

Q: Why does not silver evolve hydrogen on reacting with dil H2SO4

A: Silver is less reactive than hydrogen and so placed below hydrogen in the reactivity series. Metals…

Q: (i) Name the element of 3d transition series which shows maximum number of oxidation states. Why…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Deduce which compound is a common ore of the element listed and explain briefly: (a) Fluorine: CaF2…

A: CaF2 is the fundamental part of Fluorite, a mineral found and abused for Fluorine creation.…

Q: Give the oxidation number and coordination of the central metal of the following compounds: a.…

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Q: For health reasons the concentration of dissolved copper ions in drinking water should be less than…

A: The standard potentials are all measured at 298K, 1 atm and with 1 M solution. The standard…

Q: 20. What is the oxidation number of Cr in Cu,CrO,? А. +12 В. +3 С. +4 D. +5 E. +6

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Q: In the formation of iron (II) oxide, which species is being reduced? Fe(s) + O2(g) → FeO(s)   a.…

A: The chemical species that gains electrons are called reduced species.

Q: Which of the following species can oxidize both Mn(s) and Cd(s) but not Pb(s)? e° of Cd|Cd2+ = -0.40…

A: Given information, E° of Cd|Cd2+ = -0.40 V E° of Mn|Mn2+ = -1.18 V E° of Pb|Pb2+ = -0.13 V

Q: Identify which geometric isomer of [Pt(NH3)2Cl2] as shown. Draw the other geometric isomer and give…

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Q: Balance the equation for the following reaction under acidic aqueous conditions. Fe2+ + Cr20,2- →…

A: Balance equation: 6Fe2+  +  Cr2O72- + 14H+ → 6Fe3+  + 2Cr3+  + 7H2O Correct answer is (d) 6.

Q: 4 iron compounds have the following properties A: is hard to be oxidized in normal condition B:…

A: Iron is a chemical element and it is a prt of hemoglobin. It belongs to the first transition series…

Q: In which one of the following species, the transition metal ion doesn't obey the 18 electror rule?…

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Q: What is the balanced net ionic equation of NH3 reacting with Fe(NO3)3 and reacting with CuS

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Q: Determine the oxidation state of the coordinated metal atom in each of the following compounds:(a)…

A: (a) K[Co(NH3)2(CN)4] Let oxidation state of metal is y. +1 + y + ( 0 x 2) + (-1 x 4) = 0 y = +3…