Chemistry, Books a la Carte Edition and Modified Mastering Chemistry with Pearson eText & ValuePack Access Card (7th Edition)
7th Edition
ISBN: 9780134172514
Author: John E. McMurry
Publisher: PEARSON
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Chemistry
7. An ionic bond is formed between a cation A+ and anion B. How would the energy
of the ionic bond be affected (smaller/higher/double etc) by the following
changes?
(a) Doubling the radius of A+
(b) Tripling the charge on A+
(c) Doubling the charges on A
(d) Decreasing the radii of A and B to half their original values.
and B
One of the following pictures(Figure 1) represents NaCl and one represents MgO.
Which is which?
(a) is NaCl and (b) is MgO
(b) is NaCl and (a) is MgO
Which has the larger lattice energy?
NaCl
MgO
6.941
mol
atomic mass
electronegativity
0.98
kJ
59.6
mol
electron affinity
kJ
520.2
mol
ionization energy
kJ
3.0
mol
heat of fusion
Does the following reaction absorb or release energy?
O release
O absorb
(1) Li (g) + e
Li(g)
O Car
be decided with the data given.
Is it possible to calculate the amount of energy absorbed
or released by reaction (1) using only the data above?
O yes
O no
If you answered yes to the previous question, enter the
amount of energy absorbed or released by reaction (1):
O k/mol
Does the following reaction absorb or release energy?
O release
O absorb
(2) Li(g) → Li (g) + e
O Can't be decided with the data given.
Is it possible to calculate the amount of energy absorbed
or released by reaction (2) using only the data above?
O yes
O no
If you answered yes to the previous question, enter the
amount of energy absorbed or released by reaction (2):
I kJ/mol
Chapter 6 Solutions
Chemistry, Books a la Carte Edition and Modified Mastering Chemistry with Pearson eText & ValuePack Access Card (7th Edition)
Ch. 6 - Prob. 6.1PCh. 6 - APPLY 6.2 Which of the following sets of ions are...Ch. 6 - Prob. 6.3PCh. 6 - Conceptual APPLY 6.4 Which of the following...Ch. 6 - Prob. 6.5PCh. 6 - Prob. 6.6ACh. 6 - Prob. 6.7PCh. 6 - Conceptual APPLY 6.8 The figure on the right...Ch. 6 - Prob. 6.9PCh. 6 - Conceptual APPLY 6.10 Which of the indicated three...
Ch. 6 - Prob. 6.11PCh. 6 - Prob. 6.12ACh. 6 - Prob. 6.13PCh. 6 - APPLY 6.14 Calculate the energy of electrostatic...Ch. 6 - Prob. 6.15PCh. 6 - Conceptual APPLY 6.16 One of the following...Ch. 6 - Prob. 6.17PCh. 6 - PROBLEM 6.18 Compare the following two ionic...Ch. 6 - PROBLEM 6.19 An ionic liquid consisting of a bulky...Ch. 6 - Where on the periodic table would you find the...Ch. 6 - Which of the following spheres is likely to...Ch. 6 - Circle the approximate part or parts of the...Ch. 6 - Prob. 6.23CPCh. 6 - This figure represents the successive ionization...Ch. 6 - In the following drawings, red spheres represent...Ch. 6 - Which of the following drawings is more likely to...Ch. 6 - Prob. 6.27CPCh. 6 - Which of the following alkali metal halides has...Ch. 6 - Which of the following alkali metal halides has...Ch. 6 - Three binary compounds are represented on the...Ch. 6 - Given the following values for the formation of...Ch. 6 - What is the difference between a covalent bond and...Ch. 6 - Prob. 6.33SPCh. 6 - What is the difference between a molecule and an...Ch. 6 - Prob. 6.35SPCh. 6 - How many protons and electrons are in each of the...Ch. 6 - What is the identity of the element X in the...Ch. 6 - Prob. 6.38SPCh. 6 - Prob. 6.39SPCh. 6 - Prob. 6.40SPCh. 6 - Prob. 6.41SPCh. 6 - What doubly positive ion has the following...Ch. 6 - Prob. 6.43SPCh. 6 - Prob. 6.44SPCh. 6 - Which element in the transition-metal series Sc...Ch. 6 - Prob. 6.46SPCh. 6 - Prob. 6.47SPCh. 6 - Prob. 6.48SPCh. 6 - Prob. 6.49SPCh. 6 - Prob. 6.50SPCh. 6 - Prob. 6.51SPCh. 6 - Prob. 6.52SPCh. 6 - Prob. 6.53SPCh. 6 - Prob. 6.54SPCh. 6 - Prob. 6.55SPCh. 6 - Prob. 6.56SPCh. 6 - Prob. 6.57SPCh. 6 - Prob. 6.58SPCh. 6 - Prob. 6.59SPCh. 6 - What is the relationship between the electron...Ch. 6 - Prob. 6.61SPCh. 6 - Prob. 6.62SPCh. 6 - Prob. 6.63SPCh. 6 - Prob. 6.64SPCh. 6 - Prob. 6.65SPCh. 6 - Prob. 6.66SPCh. 6 - Prob. 6.67SPCh. 6 - Prob. 6.68SPCh. 6 - Prob. 6.69SPCh. 6 - Prob. 6.70SPCh. 6 - Prob. 6.71SPCh. 6 - Prob. 6.72SPCh. 6 - Prob. 6.73SPCh. 6 - Prob. 6.74SPCh. 6 - Prob. 6.75SPCh. 6 - Find the lattice energy of LiBr(s) in Table 6.3,...Ch. 6 - Prob. 6.77SPCh. 6 - Prob. 6.78SPCh. 6 - Prob. 6.79SPCh. 6 - Prob. 6.80SPCh. 6 - Prob. 6.81SPCh. 6 - Prob. 6.82SPCh. 6 - Prob. 6.83SPCh. 6 - Use the data and the result in Problem 6.78 to...Ch. 6 - Prob. 6.85SPCh. 6 - Prob. 6.86CPCh. 6 - Prob. 6.87CPCh. 6 - Prob. 6.88CPCh. 6 - Prob. 6.89CPCh. 6 - Prob. 6.90CPCh. 6 - Prob. 6.91CPCh. 6 - Prob. 6.92CPCh. 6 - Prob. 6.93CPCh. 6 - Prob. 6.94CPCh. 6 - Prob. 6.95CPCh. 6 - Prob. 6.96CPCh. 6 - Prob. 6.97CPCh. 6 - Prob. 6.98CPCh. 6 - Consider the electronic structure of the element...Ch. 6 - Prob. 6.100MPCh. 6 - Prob. 6.101MP
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- 5. Which of the following alkali metal halides has the larger lattice energy, and which has the smaller lattice energy? Explain. (a) (b)arrow_forwardChemistry Choose the atom or ion in each pair which best fulfills the given criterion: (i) Greater atomic radius: In or Sn (ii) Higher first ionization energy: Be or B (iii) Strongest lattice energy: CaF2 or BaF2 (iv) Greater electron affinity: Se or Sn (v) Largest ionic radius: H+ or H-arrow_forwardOf the elements Li, K, N, P, and Ne, which (a) is the most electronegative?arrow_forward
- g 6.941 mol atomic mass electronegativity 0.98 kJ 59.6 mol electron affinity kJ 520.2 mol ionization energy kJ 3.0 mol heat of fusion Does the following reaction absorb or release energy? O release O absorb (1) Li (g) + e Li(g) O Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? O yes no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): I kJ/mol Does the following reaction absorb or release energy? O release O absorb (2) Li(g) → Li (g) + e O Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? O yes O no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): I kJ/molarrow_forwardGiven the following elements: Si, Sr, Cu, Ti, S (a) which of those elements would have the larget atomic radius? (b) which of those elements would have the highest ionization energy? (c) which of those elements would have the lowest electronegativity?arrow_forward8.83 Construct a Born-Haber cycle for the formation of the hy- pothetical compound NaCl2, where the sodium ion has a 2+ charge (the second ionization energy for sodium is given in Table 7.2). (a) How large would the lattice energy need to be for the formation of NaCl2 to be exothermic? (b) If we were to estimate the lattice energy of NaCl2 to be roughly equal to that of MgCl2 (2326 kJ/mol from Table 8.1), what value would you obtain for the standard enthalpy of formation, AH, of NaCl2?arrow_forward
- The lattice energy of NaBr is –752 kJ/mol. This energy corresponds to which reaction below? Na(s) + 1/2 Br2(g) → NaBr(s) Na(g) + Br(g) → NaBr(s) Na(g) + Br(g) → NaBr(s) Na+(g) + Br–(g) → NaBr(s) Na+(aq) + Br–(aq) → NaBr(s)arrow_forwardUse condensed electron configurations and Lewis electron-dot symbols to depict the ions formed from each of the follow-ing atoms, and predict the formula of their compound:(a) Cs and S (b) O and Ga (c) N and Mg (d) Br and Liarrow_forwardWhich set of ionic compounds shows the correct order of increasing lattice energy (lowest-to-highest). (A) NaCl < NaF < KCl < KBr; (B) KBr < KCl < NaCl < NaF; (C) NaF < NaCl < KCl < KBr; (D) KCl < KBr < NaF < NaCl.arrow_forward
- The ionic compound CaO crystallizes with the same structureas sodium chloride (Figure 8.3). (a) In this structure,how many O2- are in contact with each Ca2+ ion (Hint: Rememberthe pattern of ions shown in Figure 8.3 repeats overand over again in all three directions.) (b) Would energy beconsumed or released if a crystal of CaO was converted toa collection of widely separated Ca—O ion pairs? (c) Fromthe ionic radii given in Figure 7.8, calculate the potentialenergy of a single Ca—O ion pair that is just touching(the magnitude of electronic charge is given on the insideback cover). (d) Calculate the energy of a mole of such pairs.How does this compare to the lattice energy of CaO? (e)What factor do you think accounts for most of the discrepancybetween the energies in part (d)—the bonding in CaOis more covalent than ionic, or the electrostatic interactionsin a crystal lattice are more complicated than those in a singleion pair?arrow_forwardPotassium and hydrogen react to form the ionic compoundpotassium hydride. (a) Write a balanced equation for thisreaction. (b) Use data in Figures 7.10 and 7.12 to determinethe energy change in kJ/mol for the following two reactions:K(g) + H(g) ----> K+(g) + H-(g)K(g) + H(g) ------>K-(g) + H+(g)(c) Based on your calculated energy changes in (b), which ofthese reactions is energetically more favorable (or less unfavorable)?(d) Is your answer to (c) consistent with the descriptionof potassium hydride as containing hydride ions?arrow_forwardConsider an ionic compound, MX,, composed of generic metal M and generic, gaseous halogen X. • The enthalpy of formation of MX, is AH; -909 kJ/mol. • The enthalpy of sublimation of M is AHsub = 143 kJ/mol. • The first and second ionization energies of M are IE1 :759 kJ/mol and IE2 = 1407 kJ/mol. • The electron affinity of X is AHEA = -339 kJ/mol. (Refer to the hint). • The bond energy of X, is BE = 177 kJ/mol. Determine the lattice energy of MX,. ΔΗ, kJ/mol lattice * TOOLS х10arrow_forward
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