![]() 2Given:Sublimation energy of calcium = 178.20 kJ/mol1st ionization energy of calcium = 589.50 kJ/mol2nd ionization energy of Ca =1145 kJ/molBond dissociation of Cl = 22 kJ/mol -Electron affinity of Cl = -349 kJ/molEnthalpy of reaction = -326 kJ\nIn order to calculate the lattice energy 1st we have to write the chemical equation for thedissociation of CaCl. As the size ofCa is lying in between Mg and Sr, the lattice energy of Ca must be expected to lie in between therange of Mg to Sr.Thus the range of lattice energy of CaCl is in be2een 2127 kJ/mol to 2326 kJ/mol.Step-2(b) Here we have to calculate the lattice energy of CaCl. Here all the atoms are having same charge and forming compounds with chlorine. KI, KCl, rank the following compounds by lattice energy: MgCl2, NaCl. ![]() Which compound between MgS and MgO most likely has the largest lattice energy The formula is MgO. Why MgCl2 have high lattice energy 2522 kJ/mol. as there are 2 Cl ions against one O ion the lattice energy is higher in case of MgCl2. So the order of increasing atomic size of Mg, Ca and Sr areMg < Ca < Sr. terms like use the data in the table below to calculate the lattice energy of KCl. What is the lattice energy for MgCl2 MgCl2 consists of 3 ions in total, whereas MgO has 2 ions. Isn't the lattice energy of MgCl2 more than that of BaCl2 as Mg2 is smaller than Ba2 . Thus, MgCl2 with the most exothermic LE, is the most thermally stable. (a) Write an equation, including state symbols, for the reaction that has an enthalpy change equal to the lattice dissociation enthalpy of magnesium chloride. Magnesium chloride has the most exothermic LE while barium chloride has the least exothermic one. The lattice enthalpy of magnesium chloride can be calculated from the Born-Haber cycle. It is known that as we go down agroup, the atomic size increases. In this case, I think lattice energy should be the primary consideration. The successive ionization energies of the element are shown below. 2In this question it has been given that, the lattice energy of MgCl and SrCl2 from the t2ble 8.2 isfound to be 2326 kJ/mol and 2127 kJ/mol.Mg, Ca and Sr all are present in a same group i.e group IIA. (a) Complete the energy cycle involving the enthalpy change of solution and the lattice energy of potassium chloride, KCl, and the. ![]() The size of the magnesium ion is smaller. 2Solution 30EStep-1(a)Here we have to find the range of lattice energy of CaCl. Magnesium oxide will have the largest lattice energy because it has the largest attraction between the two ions. In the example given, Q 1 = 1(1.Problem 30E(a) Based on the lattice energies of MgCl and SrCl2given in Tab2e 8.2, what is the range ofvalues that you would expect for the lattice energy of CaCl (b) Using d2a from AppendixC, Figure 7.9, and Figure 7.11 and the value of the second ionization energy for Ca,, calculate the lattice energy of CaCl. ![]() In this case, the proportionality constant, k, equals 8.999 × 109 J The equation can also be written using the charge of each ion, expressed in coulombs (C), incorporated in the constant. This value of \( k\) includes the charge of a single electron (1.6022 × 10 −19 C) for each ion. The proportionality constant k is equal to 2.31 × 10 −28 J Where each ion’s charge is represented by the symbol \( Q\) and the internuclear distance between the particles is represented by (\(r\)). ![]()
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