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

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

A:

Q: You have a 10mL of an 8% aqueous solution of H2CL6Pt (a) calculate the platinum  in this solution as…

A:

Q: When a strip of Mn is placed in a solution of Cr(NO3)3 , a deposit of chromium metal forms and…

A:

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: Among Fe, Cu, Al and Pb, which metal (s) can not be obtained by smelting.

A: The arrangement of metals according to their decreasing order of reactivity is termed as reactivity…

Q: Account for the following : (a) Copper shows its inability to liberate hydrogen gas from the acids.…

A: Oxidation is the process that involved the loss of electrons and oxidized to cation.  Hence when a…

Q: What are the structural characteristics of a chelating agent

A:

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

A:

Q: snip

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

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: What is the oxidation state of each element in Mn(Cro, ),? Cr Mn

A:

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

A:

Q: Indicate the coordination number and the oxidation number of the metal for [Zn(en)2]Br2

A: Coordination number of Zn in [Zn(en)2]Br2:Coordination number is the ligands attached to the central…

Q: what is the oxidation number of oxygen atoms in MnO2?

A: The oxidation number is zero for the summation of the oxidation numbers complete atoms in a complete…

Q: 4. Write the valence electron configuration and the oxidation states for: a. 38Sr b. 51Sb

A: Electronic configuration of 38Sr is  1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 so, valance electron…

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: When Mn2+ is mixed with sodium bismuthate, what reaction occurs?

A: The reaction is as follows:

Q: a. What is metallurgy? b. Describe the three methods of concentrating CE DEPT US

A:

Q: What are biochemical roles of iron,sodium and copper?

A: Given elements,        Iron, sodium and copper

Q: The oxidation number of platinum in Pt(H2O)4 ^+2 is

A:

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

A:

Q: You have 10mL of an 8% aqueous solution of H2Cl6Pt. Calculate the platinum in this solution as well…

A: Given volume of the solution = 10 ml = 0.010 L Volume percentage of solute H2Cl6Pt = 8% It means…

Q: What is the oxidation number of K in KMnO4 (OR K Mn O4)?

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

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

A: Given-> I think there is  K2Cr2O7

Q: For (c), why doesn't SO42- oxidize Na+ when the reduction potential of Na+ (-2.71V) is lower than…

A: If electrons get donated by any species/neutral and that species gets converted into +ve ion then…

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

A:

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: If the following redox reaction Cd + 2 Ti³+2 Ti²+ + Cd²+ is found to occur spontaneously, identify…

A: The redox reaction is: Cd + 2Ti3+ → 2Ti2+ + Cd2+

Q: Would you please discuss the importance of the reducing and oxidizing power of an ore?

A: Answer - Ore - A naturally occurring mineral containing a valuable constituent (such as metal) for…

Q: Q 7: Calculate the oxidation number of chromium in CrO,².

A:

Q: What is the chemistry behind why rusting occurs rapidly in moist conditions as compared to a dry…

A: why rusting occurs rapidly in moist conditions as compared to a dry environment? The reason is given…

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

A:

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

A: Given,

Q: 2. Write balanced net ionic equations describing each of the following reactions: Dissolution of…

A:

Q: In iron smelting, what are the possible chemical equations that will involve CaO if CaO is part of…

A:

Q: If a sample of silver coin weighing 0.2500 g gives a ppt of AgCl weighing 0.2991 g. What wt. of Agl…

A: Since moles = mass / molar mass And molar mass of AgCl = Atomic mass of Ag + Atomic mass of Cl = 108…

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: Ammonia is added when preparing calcium ?oxalate. Why

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

Q: Calculate the oxidation number of Cr in K2CrO7

A: The oxidation number of Cr in K2Cr2O7 is to be calculated. The total number of electrons the atom…

Q: Which complex ion is formed when undecomposed AgBr is washed with hypo solution in photography?

A: Sodium thiosulfate solution is used for the processing of photographic and film. It is also known as…