Lattice Energy
Trending Questions
Q. A binary solid has atoms B constitutes fcc lattice and atoms A occupies 25% of tetrahedral holes. The formula of the solid s
Q. 2 g atom of A reacts with 2 g molecules of B_4 according to following reaction 2A_2 (g) + 3B_4(g)→4C
Q. 4. In fcc lattice A, B, C, D atoms are arranged at corner , face Centre , octahedral void and tetrahedral void respectively then the body diagonal contains 1)2A, C, 2D. 2)2A, 2B, 2C. 3)2A, 2B, D. 4)2A, 2D
Q. 15. .An organic compound having molecular mass 60 is found to contain C=20%, H=6.67% and N=46.67% while rest is oxygen.On heating it gives NH3 along with a solid residue give voilet color with alkaline copper sulphate solution.Determine the compound?
Q. An element X(atomic weight=24gm/mol)forms a face centered cubic lattice.If the edge length of the lattice is 4×10^{-8}cm and the observed density is 2.40×10^3kg/m^3, then the percentage occupancy of lattice points by element X is(Use N_{A=}6×10^{23}).Explain the reason for the same also provide steps in the solution 1)96 2)98 3)99.9 4)Non
Q.
in the equilibrium mixture CaCO3 --------CaO+CO2 pressure of CO2 at 27 degree is 2 atm what will be the pressure of CO2 when 2 moles of CO2 are added into equilibrium mixture
Q. Number of orbitals in h sub - shell is ______________ .
A. 11
B. 15
C. 17
D. 19
Q. The lattice enthalpy of KI will be, if the enthalpy of (I) Δ_fH^°(KI) = –78.0 kcal mol^{-1} (II) Ionisation energy of K to K+ is 4.0 eV (III) Dissociation energy of I_2 to I is 28.0 kcal mol^{-1} (IV) Sublimation energy of K is 20.0 kcal mol^{-1} (V) Electron gain enthalpy for I to I^- is –70.0 kcal mol^{-1} (VI) Sublimation energy of I2 is 14.0 kcal mol^{-1} (1 eV = 23.0 kcal mol^{-1}) Options: a) +14.1 kcal mol^{-1} b) -14.1 kcal mol^{-1} c) -141 kcal mol^{-1} d) +141 kcal mol^{-1
Q. 2. which of the ionic compound has the largest amount of LATTICE ENERGY. GIVE REASON. AlF3 or AlN
Q. For the rxn, 1g mole of CaCO3 is enclosed in a 5L vessel. CaCO3(s) --------> CaO(s)+CO2(g)
Kp = 1.16 at 1073 K then % dissociation of CaCO3 is
A) 0
B) 6.58
C) 65
D) 100
Q. 68Arrange the following in increasing order of strength of ionic bond . AlN , Al2O3 , AlF3.
Q. 1.nge the following in the increasing order of strength of ionic bond. NaF, MgF2, AlF3.
Q.
All hydrides of group I and group II metals decompose on heating before the melting point. True or False?
False
True
Q. 6.Why lattice energy of NaF greater than that of NaCl?
Q. The Process requiring absorption of energy is :
Q.
what is lattice energy & how is it related to the stability of an ionic compound?
Q. Ionic compounds having a higher lattice energy than solvation energy are readily soluble
- True
- False
Q. Why lattice enthalpy should be high for ionic bond to be stable
Q. 49.which of the following combination will form most stable ionic bond?? (also explain how) a) N, O b) Li , I c) Fe, Cl d) Na , F
Q.
Lattice energy of an ionic compound depends upon
Charge on the ion only
Size of the ion only
Charge on the ion and size of the ion
Packing of ions only
Q. explain the trend of strength of ionic bond in the folloeing cases a.NaF
View SolutionQ. Assertion: Lattice energy of CaO is higher than that of NaCl.
Reason: The lattice energy of an ionic compund is directly proportional to the product of the charges of ions.
Reason: The lattice energy of an ionic compund is directly proportional to the product of the charges of ions.
- Both the assertion and the reason are true but the reason is not the correct explanation of the assertion
- The assertion is true but the reason is false
- Both the assertion and the reason are false
- Both the assertion and the reason are true and the reason is the correct explanation of the assertion
Q. 49.Arrange the given compounds in order of increasing strength of ionic bond AlF3, Al2O3, AlN
Q. 26 A CRYSTAL is made up of particles A, B, C.A FORMS fcc packing, B occupies all octahedral voids , C occupies all tetrahedral voids .If all the particles along one body diagonal are removed then the formula of the crystal would be?
Q. 42. An element A forms hexagonal close packed structure. The total number of voids and number of tetrahedral voids in 0.5 moles of A respectively are
Q.
charge on 1 gram of Al 3+ ions is ____. (e=electronic charge)
Q.
for the rxn NH2COONH4(s) = 2 NH3(g) + CO2(g) the equi constant Kp= 5 * 10-4 atm3 the tottal pressure of the gaseous product when 1 mole of reactant is heated will be :( 0.15 atm )
Q. The compound that has the highest lattice energy is:
- RbF
- CsF
- NaF
- KF
Q. In a crystal, cations and anions are held together by:
- Electron
- Electrostatic force
- Nuclear force
- Covalent bond
Q. why does f- occupy the voids in fluorite
because according to i tutor the voids are usually occupied by cations
