Q: → PBSO4 + MnOq d PbO, + Mn²+ + SO,²- - e HNO, + Cr,O,²- → Cr* + NO;
A: The given reaction is: In the given reaction, Pb is getting reduced from +4 to +2 and Mn is getting…
Q: The ionized form of ferrous oxide is a. Fe*2: 02 O b. Fe*3: 0-2 O c. Fe*2: 03 o d. Fe*3, 03 +3.
A: In this question, we will see what is the ionized form of Ferrous Oxide You can see details…
Q: L. Identify the metal
A:
Q: Which one of the following elements is an example of a transition metal in period 4? а. Carbon O b.…
A: Transitions metals are also known as d-block elements. These are present in the middle of the…
Q: Assume that you have these materials: a) Li (s); b) Br2 (l); Ge (s) and d) Si(s). Choose the best…
A: For a good electrical conductor, material should have free electron to move.
Q: If your base metal is Fe, which among the following metals can you use as a noble coating for…
A: If your base metal is Fe,the metal is used as coating for protecting it, the metal is given below.
Q: I + Cr,0,- Cr" + I, + H2O (acidic)
A: The given redox reaction is I-+Cr2O72-→Cr3++I2+H2O Oxidation half reaction I-→I2(as oxidation…
Q: СІО, + Ca(CIO,), Са(ОН), H.O 4) +
A: balance the chemical equation
Q: 0.7336 g sample of an alloy containing copper and zinc is dissolved in 8 M HCl and diluted to 100 mL…
A: We have to find %w/w Zn and the %w/w Cu in the sample.
Q: What is a heterogeneous alloy?
A: Alloy is a mixture of metals, which are formed via mixing of the molten metals. Example = Brass is…
Q: A post transition metal in group 16 on the periodic table
A: The elements which are present to the right of a transition metal and to the left of the metalloids…
Q: Can you identify the lead (wire) color that represent the cathode?
A: Basically in electrolysis the red color wire indicates anode as a positive electrode at the same…
Q: Why is titanium metal called as strategic metal? Mention two of its properties which makes it so…
A: Titanium is called strategic metal because it is used for making certain war equipments. The…
Q: e AS°, rxn
A:
Q: II + Ca(OH), - D
A:
Q: What is Manganese ?
A: The arrangement of elements in increasing order of atomic number in the tabular form is termed…
Q: a 0.500 g sample of impure magnetite (Fe3O4) is converted by chemical reactions to Fe2O3(159.69…
A: The question is based on quantitative analysis. we have to find out percentage iron oxide present in…
Q: Why is zinc not regarded as a transition element?
A: Transition metal has incomplete d subshell in one or more than one oxidation state.
Q: A ferromagnetic element is one that O a there is no magnetic force Ob magnets strongly attract…
A: The ferromagnetic elements are:
Q: Pb | PbSO,(s), SO,-- || Cu++ | Cu Cd | Cd** || H+ | H2(g) Zn | Zn++ || Fe+++, Fe++ | Pt
A: Electrochemical cell reaction: It is a process in which electrons flow from one substance to another…
Q: <p>Which element has the higher ionization energy, Cu or Au?
A: The elements in a modern periodic table are arranged in an increasing order of their atomic number.…
Q: Which element has the higher first ionization energy, Cu or Au?
A: The first ionization energy is the energy required to remove an electron from a neutral atom to form…
Q: Would you expect salts of the gold(I) ion, Au+, to be colored? Explain.
A: The presence of a partially filled d orbital is responsible for the coloration in ions because of…
Q: e. The sample of potassium is then reacted with hydrochloric acid (metal + acid). Draw a BONDING…
A:
Q: H,O,), + H,S Cus 2 Hоно
A: Balanced equation:
Q: In aqueous solution, Co(H₂O) 6²+ is pink, CoCl4²- is blue, and CI- and H₂O are colorless. The…
A:
Q: The less electropositive element is: A. Na B. Be C. Li D. Mg
A:
Q: Describe the physical properties of metals?
A: The physical properties of metals has to be given,
Q: Describe how the following changes are brought about: (i) Pig iron into steel. (ii) Zinc oxide into…
A: ( i ) Pig iron into steel: Pig iron is charged into basic oxygen furnace (BOF) and water cooled…
Q: (a) One of the alkali metals reacts with oxygen to form a solidwhite substance. When this substance…
A: The periodic table is the representation of the elements in the increasing order of their atomic…
Q: Name an alloy of:(i) Aluminium used is construction of aircrafts(ii) lead in joining metals for…
A: (i) Duralumin is the aluminium alloy used is construction of aircrafts. Composition of duralumin is,…
Q: explain the bonding nature in [ Ti(CO)6]2-. * Your answer
A:
Q: If your base is Fe, which among the following metals can you use as a noble coating for protecting…
A: Iron, Fe can be protected from rusting by applying a noble coating. A noble coating is applying…
Q: Which element is brittle and does not conduct heat or electricity?
A:
Q: Which of the following is an alkaline earth metal? A.K B.Cu C.Mg D.Na E.Al
A: The elements that comes in group 2 of the periodic table are called alkaline earth metals. They are…
Q: give the charge of the transition metal Ag2C2O4
A: Answer : Charge of transition metal Ag is +1. Ag2C2O4 siver oxalate is a ionic compound. Which…
Q: Which of these is a property of metals?
A: Metals :- These are minerals which are isolated from the earth crust in the form of alloy ( mixture…
Q: Give 5 behavior and properties of metallic bonding
A: ANSWER IS DISCUSSED BELOW :
Q: MCQ 119: When magnesium is burnt on Bunsen burner it gives flame of color A. bright white B. off…
A: In this question we have to find out the color of flame when the Magnesium is burnt on Bunsen…
Q: AgBr + GAPO, →_Ag,PO, + GaBr, AIBr, + K,SO, → _ KBr + Al,(SO,),
A: The question is based on the concept of balancing the reaction in first step of any calculations,…
Q: Which of the following contains only metals? Ag, As, Ba, Ca Ag, Au, Pb, Rb As, Ge, Si, Te…
A: Metal: Metals are situated on the left-hand side of the periodic table. The metals are…
Q: In what ratio would you expect Mg and Cl to combine? Why?
A: The electronic configuration of Mg and Cl is given below.
Q: Simplified explanation of nitride and carbon in minerals, simplified explanation of the mechanism of…
A: Explanation- @ Nitride in minerals- In chemistry, a nitride is a compound of nitrogen where…
Q: What is the term for a homogenous mixture of two or more metals? A) metalloid B) a compound C) an…
A: The detailed explanation of the given terms are as follows: A) metalloid: A metalloid is a type of…
Q: This mineral when found in soil, turns it reddish in color. (A) Iron B) Magnesium (C) Copper D)…
A: We have to know the type of mineral present in the soil depending upon the color of the soil. The…
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- (i) Name the method of refining to obtain low boiling metal like mercury, (ii) What is the role of pine oil in froth floatation process? (iii) Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?- A silicate ore contains 12.00% Na;O and weighs 0.5000 gram. On analysis by the J.L. Smith method, the sample yielded 0.1500 g of a mixture of Nad + KA. What weight of K2PtCl, was obtained from the mixture of chlorides?6) The electrical conductance of the aqueous solution of [Co(NH:)sBr]Br2 changes on standing overnight, would you expect it to increase or decrease? Give your reason. Answer:
- (a) Interpret the variation, including the overall trend across the 3d series, of the following values of hydration enthalpies (in kJ mol·'). [Ca(H2O)«]²*: -2468; [Ti(H2O)«J*: -2700; [V(H2O)«]**: -2814; [Mn(H2O)6]**: -2743; [Fe(H2O)«]²+: -2843; [Co(H20)6]**: -2904; [Ni(H2O)c]*: -2986. (b) By making use of LFSE (Ligand field stabilization energy) in tetrahedral and octahedral geometries, predict whether hausmannite mineral (Mn3O4) has a normal spinel or inverse spinel structure. Describe the structure of the mineral in detail.Using ice calorimetry, the heat of reaction was monitored when 2.00 mL of 5.241 M standardized HNO3(ag) reacted with excess NaOH(ag). This reaction caused 0.570 g of ice to melt. What was the heat of reaction per mole of HNO3 (in kJ mol-1)? (AHfus(ice) = 333 Jg-1) %3D +31.0 O -18.1 +5.21 +18.1 -31.0Compare the solubility of ferrihydrite (Fe(OH)3) and goethite (FeOOH), with dissolution reactions shown below. Fe(OH)3 3 H+ --> Fe3+ + 3 H2O FeOOH + 3 H+ --> Fe3+ + 2 H2O
- (i) Name the method of refining of metals such as Germanium.(ii) In the extraction of Al, impure Al2O3 is dissolved in cone. NaOH to form sodium aluminate and leaving impurities behind. What is the name of this process?(iii) What is the role of coke in the extraction of iron from its oxides?2. Answer ALL parts a) - c). Sodium ([Ne] 3s¹3pº) forms a simple cubic (sc) primitive crystal structure, in which Na atoms are arranged at the corners of a cube. a) How many atoms are contained in the unit cell, and how many valence bands can be expected? b) Sketch the crystal orbitals at the special points ï'(0,0,0), X(1/2,1/2,0), and M(1/2,1/2,1/2), and hence draw the corresponding band structure along T-X-M-T. c) With the aid of a diagram, explain how the band structure would change if the cube was distorted into a rhombohedron by elongation along a body diagonal?Cerium(IV) is a strong oxidizing agent commonly used in redox titrations. Which of the following statemnt is/are NOT true for cerium(IV)? I.A Ce** standard solution is prepared using primary-standard-grade ammonium hexanitratocerate(IV), (NH4)2Ce(NO3); dissolved in hot hydrochloric acid solution. II. Ce** is yellow and Ce3* is colorless. The color change is abrupt enough that Ce** can serve as its own indicator. III. Ce**/Ce* exists in different formal potential in different acids due to the interaction of the anions part of the acid with Ce** IV. Analysis of many organic analyte such as alcohol, aldehydes can be determined using Ce**by an indirect method involving a technique of back titration of unreacted excess Ce*with standard iron Il titrant O a. 1,11,IV O b. 1, II, III O. I,II O d. II, II, IV O e. I, II, III, IV
- (f) Potassium permanganate (g) Sodium hypochlorite (h) Beryllium bicarbonate (1) Ammonium dichromate (G) Iron (II) chloride(a) Write the principle of electrolytic refining.(b) Why does copper obtained in the extraction from copper pyrites have a blistered appearance?(c) What is the role of depressants in the froth floatation process?Consider the equilibrium 21(8) — 12(8) Calculate the standard change in enthalpy, AH AH = 62.25 kJ/mol for l₂(g) and AH, 106.6 kJ/mol for I(g).