Describe the role of (i) NaCN in the extraction of gold from gold ore. (ii) Si02 in the extraction of copper from copper matte. (iii) Iodine in the refining of zirconium. Write chemical equations for the involved reactions.

Q: 2. Approximately 0.40 hectare of rainforest are capable of absorbing 1000 kg of CO2. Given that the…

A: T = 310K  P = 1atm  Amount of CO2 = 350kg  Molar mass of CO2 = 44.01g/mol R = gas constant = 0.0821…

Q: Without consulting any source other than a periodic table, what relative level of toughness would…

A: Ti -Titanium is the transition metal having atomic number 22.  Ti can loses its two electrons to…

Q: estimate the fraction of electrons above fermi level in sodium and copper at room temperature

A:

Q: A test tube contains the following chemical equilibrium: N2O4(g) + 59 kJ ⇌ 2NO2(g). You notice that…

A: Exothermic process is the one in which energy is liberated from the system to the surrounding in the…

Q: What is the colour of FeSO4.7H2O crystals? How does this colour change upon heating? Give balanced…

A: The chemical formula of ferrous sulphate heptahydrate is FeSO4.7H2O and it can be also called as…

Q: (i) Name the method of refining of metals such as Germanium.(ii) In the extraction of Al, impure…

A: Refining is a process of eliminating impurities to obtain metals of high purity. These impurities…

Q: Boron nitride (BN) is made by the reaction of boron trichloride with ammonia.(a) Write a balanced…

A:

Q: Describe the role of(i) NaCN in the extraction of gold from gold ore.(it) SiO2 in the extraction of…

A:

Q: Write the balanced chemical equation for the reaction of dilute sulphuric acid with iron.

A: Balanced reaction is a chemical reaction in which number of atoms for each element in the reaction…

Q: Draw the structural formula of bis(dimethylglyoximato)nickel(II) and describe the type of…

A:

Q: Write the chemical formula for each of the following compounds, and indicate the oxidation state of…

A: To determine chemical formula of compounds and indicate oxidation state of halogen: Perchloric acid:…

Q: Explain the action of TiO2 as a photocalyst during wastewater treatment

A: Wastewater is majorly polluted by the organic textile dye,directly being released into the water…

Q: What is the function of manganese(IV) oxide in the thermal decomposition reaction of potassium…

A: When a larger reactant (MN) is broken into the small molecules (M and N) in the presence of heat or…

Q: The first stage in corrosion of iron upon exposure to air is oxidation to Fe2+. (a) Write a balanced…

A: Corrosion is a galvanic process by which metals deteriorate through oxidation, usually but not…

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

A:

Q: What is rock salt? Mention its colour and the reason due to which it has this colour ?

A: Salt is a mineral consisting predominantly of sodium chloride, a chemical element that belongs to a…

Q: Explain the role of each of the following in the extraction of metals from their ores :(i) CO in the…

A: Extraction of metals: Extractive metallurgy is the practice of removing valuable metals from an ore…

Q: (i) Indicate the principle behind the method used for the refining of Nickel. (ii) What is the role…

A: The process used for metal extraction in the pure form is named Metallurgy. Metals are extracted…

Q: what is the role of silica in the metallurgy of copper?

A: The most important ore of copper found on the earth is the copper-pyrite ore whose chemical formula…

Q: How can you separate alumina (Al2O3) from silica present in bauxite ore? Write the chemical…

A: Filtering of aluminum from bauxite: Finely powdered bauxite metal is processed with a watery…

Q: Write the role of the following: (i) Iodine in the refining of zirconium (ii) Silica in the…

A: i) When impure zirconium is heated with the iodine, it will form volatile compound ZrI4, which on…

Q: Write a balanced chemical equation for the reaction that occurswhen (a) titanium metal reacts with…

A: The balanced chemical equation has to be given for the reaction of titanium metal with oxygen…

Q: Account for the fact that LiF and CsI have low solubility in water whereas LiI and CsF are very…

A:

Q: The reaction 2A(g) ⇌ B(g) is found to have Kp = 24.5. What would the equilibrium constant be for…

A:

Q: What is the role of CO2 in the extractive metallurgy of aluminium from its ore?

A: The entire scientific and technological processes involved in the extraction and isolation of a pure…

Q: The reaction of calcium hydride, CaH2, with water can be characterized as a Lewis acid-base…

A: According to the lewis acid-base theory, lewis acid is any chemical species that can accept loan…

Q: What is the main origin of difference in the magnetic properties of lanthanides and transition…

A: The magnetic nature of a species can be explained on the basis of unpaired or paired electrons. In…

Q: ive an example that illustrates the importance of chirality or handedness in; Meteorology…

A: Answer -  Chirality - Chirality essentially means 'mirror-image, non-superimposable molecules', and…

Q: 1. What are the important considerations in determining the % ash content and elemental contents of…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: Pyrite (FeS2) can be leached by oxygen in sulfuric acid solution to form ferric sulfate. Write the…

A: A balanced reaction is the reaction in which equal number of atoms are present on both the sides of…

Q: discuss the importace and methods of solid liquid separation processes of hydro metallurgy

A:

Q: What are purification methods of Cobalt (II) Sulphate?

A: If purifying by electrolysis, an aqueous sulfate solution at 50 to 70°C is usually used with a lead…

Q: What is the role of NaOH in the metallurgy of aluminium?

A: Given: The extraction of aluminium is done from its ore called bauxite, Al2O3.2H2O. There are…

Q: The process whereby chemical treatment is used to temporarily prevent decomposition is most…

A: :-PRESERVATION:- Chemical treatment used to temporary prevent decomposition is called PRESERVATION.…

Q: 17.The complete combustion of 9.25 g of a compound of molar massM=74g-mol- containing carbon,…

A: Given : Mass of compound combusted = 9.25 g Molar mass of compound = 74 g/mol. Volume of carbon (IV)…

Q: What is the function of SiO2 in the metallurgy of copper?

A: Metallurgy is a process in which metals are separated from its ore.

Q: Predict the products and balance the following eqn. and identify the type of reaction Mg + Br FeCO)

A: Note : Bromine gas exist in the Br2 form and cannot exist as a Br form, thus the first equation is…

Q: Aside from EDTA, enumerate (5) important chelating agents in the field of Medical Technology.

A: Chelating agents:  Chelating agents are molecules that have the ability to form more than one bond…

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