ap chem

calculate the lattice enthalpy of potassium fluoride from the following data:
enthalpy of formation of K(g):
+89 kJ · mol−1
first ionization energy of K(g):
+418 kJ · mol−1
enthalpy of formation of F(g):
+79 kJ · mol−1
electron affinity of F(g):
+328 (�H = −328) kJ · mol−1
enthalpy of formation of KF(s):
−567 kJ · mol−1

Options:

1. 1481 kJ · mol−1
2. 904 kJ · mol−1
3. 497 kJ · mol−1
4. 347 kJ · mol−1
5. 825 kJ · mol−1

  1. 👍 0
  2. 👎 1
  3. 👁 743
  1. You might like some of the following links:

    http://search.yahoo.com/search?fr=mcafee&p=how+to+calculate+lattice+enthalpy


    Sra

    1. 👍 0
    2. 👎 0
  2. You want to use the Born-Haber cycle.

    1. 👍 0
    2. 👎 0
  3. 5. 825

    1. 👍 0
    2. 👎 0
    posted by Lola
  4. The answer is 5) 825 kJ · mol−1

    1. 👍 0
    2. 👎 0
    posted by ?

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Consider the information given below ΔH⁰/ kJmol-1 Enthalpy of lattice formation for CaF2 -2611 Enthalpy of hydration for Ca2+ ions -1650 Enthalpy of hydration for F- ions -506 Using the information given above, calculate the

    asked by chansa on June 7, 2016
  2. Chemistry

    What is the enthalpy change (in kJ/mol) for the following process? Na+(g) + Br-(g) --> NaBr (s) Hint: use the Born-Haber cycle Note: the reference state for Br2 is Br2(l) not Br2(g) Data (in kJ/mol): enthalpy of sublimation of

    asked by Crystal on February 1, 2011
  3. Chemistry*Dr.Bob

    I keep finding all sorts of different enthalpy of vaporizations for bromine. I used: 254.66 So factoring 254.66/2 into my equation below i ended up with a lattice energy of -863.33. Can you confirm this?

    asked by Crystal on February 2, 2011
  4. Chemistry

    calculate the enthalpy change for: (enthalpy of formation of aqueous sodium hydroxide is -469.60 kJ/mol. enthalpy of formation of liquid water is -285.8 kJ/mol) 2Na + 2H2O = 2 NaOH + H2

    asked by Annie on January 31, 2013
  5. chemsitry

    c. Use the enthalpy diagram provided above and apply Hess’s Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following values: The standard enthalpy of formation of

    asked by Nora on October 23, 2010
  6. Chemistry

    You wish to know the enthalpy change for the formation of liquid PCl3 from the elements shown below. P4(s) + 6 Cl2(g)--> 4 PCl3(l) ΔH°f = ? The enthalpy change for the formation of PCl5 from the elements can be determined

    asked by Kat on May 1, 2011
  7. Chemistry

    O3 + NO --> O2 + NO2 (all in gas state) Calculate the change in enthalpy for the reaction at room temp. using the following data ^Hf: O3 = 143 NO = 90 NO2 = 33 So, I have 143+90--> X + 33. I don't know what the enthalpy of O2 is.

    asked by Anonymous on February 18, 2008
  8. Chemistry

    The enthalpy of formation for a substance corresponds to the enthalpy change for a reaction. Write the specific chemical reaction defining the enthalpy of formation of butane: Just checking to make sure this is correct: 4C + 5H2

    asked by AJ on March 26, 2017
  9. Chemistry

    The enthalpy of combustion of butane C4H10 is described by the reaction: C4H10(g) + (13/2) O2(g) -> 4CO2(g) + 5H2O(g) ΔH°rxn = –2613 kJ/mol Given the following enthalpies of formation: ΔH°f[CO2(g)] = -393.5 kJ/mol

    asked by anon on March 18, 2017
  10. chemistry

    give enthalpy profile diagrams to illustrate endothermic and exothermic reactions. include an explanation of cocepts such as enthalpy change, activation energy and catalysts.explain how the process of bond breakage and formation

    asked by ABRAHAM on February 2, 2011

More Similar Questions