Q#02. Answer the followings: (a) Elucidate the salient features of reciprocal lattice and how does it help to investigate the crystal structures.

Q: Calculate the lattice enthalpy(nearest integer value) in kJmol-1 of LiF, given that ,enthalpy of…

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Q: At high temperatures, glass has a tendency to change its shape into a sphere. Assume that the…

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Q: 1) The volume of one ruthenium atom (molar mass = 101.1 g/mol) is 1.211x10 2³cm³. What would be the…

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Q: Using your knowledge of molecular structure, identify the main intermolecular force in the following…

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Q: (1) Knowing that lithium crystallizes in a cubic system with lattice considering its atomic mass (7)…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A hypothetical metal A with a BCC lattice structure has a density of 8.87 g/cm3. If a hypothetical…

A: Given: density of the metal A = 8.87 g/cm3 To find: The density of metal B

Q: 2.) Given this information, answer the following questions for crystalline CsBr. ionic radius of Cs:…

A: Given data about crystalline CsBr: ionic radius of Cs: 0.167 nmionic radius of Br: 0.196 nmatomic…

Q: Mixing SbCl3 and GaCl3 in a 1;1 molar ratio (usingliquid sulfur dioxide as a solvent) gives a solid…

A: (a)

Q: A common feature in high-temperature ceramic superconductors is a Cu-0 sheet that serves as a…

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Q: what type of lattice does the ionic compound Ba3N2 belong?

A: Types of lattice energy does not make any sense. The lattice energy is the energy required to…

Q: Q 3: Represent in the drawing each of [001], [111], (112), (021), (110) for a cubic crystal.

A: Representation of [001], [111], [112], [021], [110] for a cubic crystal system.

Q: How many (a) nearest neighbours, (b) next-nearest neighbours are there in a body-centred cubic…

A: SOLUTION: Step 1: (a) For BCC, each lattice points have 8 nearest neighbors (in the centers of the…

Q: In a hydrogen molecule, the two hydrogen atoms are held together by a single bond with a bond energy…

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Q: Which lattice plane corresponds to the (212) set of planes?

A: To define the structure of crystal ,we need to find the orientation  of plane passing through the…

Q: Based on Kapustinskii equation, calculate the lattice energy of AICI3. Given that: W=1.079 x 105…

A: given data - W = 1.079 x 105 kj.pm/mol ionic radii of Al3+ =r+ =68 pm ionic radii of Cl- r- =167 pm…

Q: What is the electrostatic potential energy (in joules) betweentwo protons that are separated by 62…

A: When charged particles interact, a potential is developed, this is called the electrostatic…

Q: E15C.5(b) Calculate the lattice enthalpy of MgBr, from the following data: AH/(kJ mol") Sublimation…

A: Given:   ∆H/(kJ mol-1) Sublimation of Mg (s) +148 Ionization of Mg(g) to Mg2+(g) +2187…

Q: For each substance in the pair, list the forces between the formula units (IeFs for most, but IaFs…

A: a) The compounds given are SCl2 and SO2.

Q: Consider the following thermodynamic quantities below: ΔΗ Reaction +A +B Pb(s) → Pb(g) Pb(g) →…

A: Sublimation is the conversion of a solid to a gaseous state without it being liquid. Sublimation is…

Q: If 20.15% of the atoms in a sample of tin are replaced by copper atoms without any change to the…

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Q: 16. Calculate the normal melting point of l2 (s) in °C given the following data: AH° = 15.52 kJ/mol…

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Q: to Sublime KG) = 8E9.0 KJ/mol Enegy Electron affinity of F(g)2-328.0 KJ/mol First ionization eneryy…

A: Lattice energy of KF can be calculated using Born-Haber cycle.

Q: Q10a. Explain order parameter and its importance in respect to liquid crystal materials? What are…

A: Answer - According to the question - Liquid crystal is a state of matter that has properties between…

Q: Q2. Give a list ONLY for the following items: 1. The main bases on which crystallographic systems…

A: We have asked to give only list for the item given and the answer to this question is given in…

Q: Which allotropic form of carbon are conductor and which are non conductor's and why?

A: Allotropy is defined as the property of some chemical elements to exist in two or more different…

Q: Thermodynamics and enthalpy Data: M(Pb) = 207 g mol AmeltH°(Pb) = 4.8 kJ-mol AvapH°(Pb) = 179.5…

A: Molar enthalpy of reaction can be calculated from the steps involved in the reaction.

Q: Calculate the lattice enthalpy (DeltaH in kJ/mol) of the MF2 metal fluoride using the following…

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Q: Calculate the standard enthalpy of formation of the M20(s) metal oxide (AH in kJ/mol) using the…

A: The enthalpy change for the reactants to the products is same whether the process occur in single…

Q: A metal with molar mass of 99.42 g/mol crystallizes in a body-centered cube with edge length of 324…

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Q: Which substance do you expect to have the greatest latticeenergy: MgF2, CaF2, or ZrO2?

A: The lattice energy of the system depends upon the charge on cation and anion. Also, the lattice…

Q: Q2. Calculate the planer density of planes (011) for BCC, and FCC crystal structures?

A: Planar density is defined as the number of atoms per unit area that is centered on a plane. So,…

Q: LiH crystallizes with the same structure as NaCl. Given the ionic radii and the molar mass of Li+ (…

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Q: Hydrazine (H2NNH2), hydrogen peroxide (HOOH), andwater (H2O) all have exceptionally high surface…

A: (a) Lewis structures of Hydrazine (H2NNH2), hydrogen peroxide (HOOH), andwater (H2O) are given…

Q: The intermetallic compound FeTi has the CsCl-type structure with a=0.308nm. Calculate its density

A: Given FeTi has CsCl type structure .

Q: What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy…

A: The given compound is made up of X and Y. Y forms ccp lattice. This shows that the number of atoms…

Q: Consider the thermodynamic data below:   Compound ΔH∘f(kJ/mol) C3H8(g) −103.85 O2(g) 0 CO2(g)…

A: Calculate the minimum number of grams of propane, C3H8(g), that must be combusted under standard…

Q: If you know that the atomic weight of a metal is 132.9 and its density is 3 gm/ cm 1.873 and that…

A: Given the

Q: LiBr has a density of 3.464 g/cm^3 and the NaCl crystal structure. Calculate the interionic distance

A: LiBr has a molecular weight of 86.845, and the unit cell contains four cations and four anions. Z =…

Q: tUse this information to solve the problems that follow. X is a metal that is solid under standard…

A: The balanced chemical equation 2 X (s) + Br2 (l) = 2 XBr (s)

Q: For each substance in the pair, list the forces between the formula units (IeFs for most, but IaFs…

A: According to the question, here we have to list the forces between the formula units (given) &…

Q: Why do covalent and molecular crystals typically have a much lower packing density than metal…

A: 3. A covalent bond is formed by the overlap of half-filled atomic orbitals which have definite…

Q: The lattice enthalpy of RbBrO3 is measured to be 610 kJ/mol. Calculate the thermochemical radius of…

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Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.