(a)
Interpretation:
The balanced chemical equation for production of chromium has to be written.
Concept Introduction:
Balanced Chemical equation:
A balanced chemical equation is an equation which contains same elements in same number on both the sides (reactant and product side) of the chemical equation thereby obeying the law of conservation of mass.
(b)
Interpretation:
The balanced chemical equation for production of copper has to be written.
Concept Introduction:
Roasting:
- In metallurgy roasting is used to purify metals. Roasting involves heating of ore at high temperature in furnace by air.
- In roasting, conversion of gas to solid occurs to clean metals.
- Mostly sulphide undergoes roasting and gets converted to an oxide.
Balanced Chemical equation:
A balanced chemical equation is an equation which contains same elements in same number on both the sides (reactant and product side) of the chemical equation thereby obeying the law of conservation of mass.
(c)
Interpretation:
The balanced chemical equation for production of lead has to be written.
Concept Introduction:
Balanced Chemical equation:
A balanced chemical equation is an equation which contains same elements in same number on both the sides (reactant and product side) of the chemical equation thereby obeying the law of conservation of mass.
(d)
Interpretation:
The balanced chemical equation for production of potassium has to be written.
Concept Introduction:
Balanced Chemical equation:
A balanced chemical equation is an equation which contains same elements in same number on both the sides (reactant and product side) of the chemical equation thereby obeying the law of conservation of mass.
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General Chemistry: Atoms First
- What is the common are of tin and how is tin separated from it?arrow_forwardDescribe the following :(i) The role of cryolite in electro metallurgy of aluminium.(ii) The role of carbon monoxide in the refining of crude nickel.arrow_forwardA blast furnace uses Fe₂O₃ to produce 8400. t of Fe per day.(a) What mass of CO₂ is produced each day?(b) Compare this amount of CO₂ with that produced by 1.0 million automobiles, each burning 5.0 gal of gasoline a day.Assume that gasoline has the formula C₈H₁₈ and a density of0.74 g/mL, and that it burns completely.arrow_forward
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- (a) In the industrial production of iron, what is the reducing substance loaded into the blast furnace? (b) In addition to fur-nishing the reducing power, what other function does this sub-stance serve? (c) What is the formula of the active reducing agent in the process? (d) Write equations for the stepwise reduc-tion of Fe₂O₃ to iron in the furnacearrow_forwardThe most important oxides of iron are magnetite, Fe3O4,and hematite, Fe2O3. (a) What are the oxidation statesof iron in these compounds? (b) One of these ironoxides is ferrimagnetic, and the other is antiferromagnetic.Which iron oxide is more likely to be ferrimagnetic?Explain.arrow_forwardPredict the products of each of the following reactions and then balance the chemical equations.(a) Fe is heated in an atmosphere of steam.(b) NaOH is added to a solution of Fe(NO3)3.(c) FeSO4 is added to an acidic solution of KMnO4.(d) Fe is added to a dilute solution of H2SO4.(e) A solution of Fe(NO3)2 and HNO3 is allowed to stand in air.(f) FeCO3 is added to a solution of HClO4.(g) Fe is heated in air.arrow_forward
- A slag sample is known to contain all of its iron in the forms of FeO and Fe2O3. A sample of 1,000 g of the slag was dissolved in hydrochloric acid according to the usual method, then reduced with stannous chloride and finally titrated with a 0.02237 M solution of potassium permanganate, of which 28.59 mL were used. A second aliquot of the slag sample, weighing 1,500, was dissolved in a nitrogen atmosphere to further adjust the oxidation state of the iron, it was immediately titrated with the same potassium permanganate solution. If this second experiment required 15.60 mL of permanganate solution, calculate: a) The percentage of total iron in the slag. b) The percentages of the oxide FeO and Fe2O3arrow_forwardElemental Li and Na are prepared by electrolysis of a molten salt, whereas K, Rb, and Cs are prepared by chemical reduction(a) In general terms, explain why the alkali metals cannot be pre-pared by electrolysis of their aqueous salt solutions. (b) Use ion-ization energies to explain why calcium should notbe able to isolate Rb frommolten RbX (X halide). (c) Use physical properties to explainwhy calcium isused to isolate Rb from molten RbX. (d) Can Cabe used to isolate Cs from molten CsX? Explain.arrow_forwardWrite a balanced net ionic equation for each of the followingreactions: (a) Dilute nitric acid reacts with zinc metalwith formation of nitrous oxide. (b) Concentrated nitricacid reacts with sulfur with formation of nitrogen dioxide.(c) Concentrated nitric acid oxidizes sulfur dioxide withformation of nitric oxide. (d) Hydrazine is burned in excessfluorine gas, forming NF3. (e) Hydrazine reduces CrO42- toCr(OH)4- in base (hydrazine is oxidized to N2).arrow_forward
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