Exam 4: Lattice Energy

Question 1

ions soluble with no exceptions

Answer 1

Li+, Na+, K+, NH+, group 1 cations
NO3-, C2H3O2-, ClO3-, ClO4-

Question 2

ions generally insoluble

Answer 2

OH-, S2-, CO3^2-, PO4^3-

Question 3

Cl-

Answer 3

soluble except when paired with Ag+, Hg^2+, or Pb^2+

Question 4

Br-

Answer 4

soluble except when paired with Ag+, Hg^2+, or Pb^2+

Question 5

I-

Answer 5

soluble except when paired with Ag+, Hg^2+, or Pb^2+

Question 6

SO4-

Answer 6

soluble except when paired with Sr^2+, Br^2+, Pb^2+, Ag^+, or Ca^2+

Question 7

OH-

Answer 7

insoluble except when paired with Li+, Na+, K+, NH4+
slightly soluble when paired with Ca^2+, Sr^2+, or Ba^2+

Question 8

S^2-

Answer 8

insoluble except when paired with Li+, Na+, K+, NH4+
or Ca^2+, Sr^2+, Ba^2+

Question 9

lattice energy

Answer 9

higher charges and smaller ionic radius have greater lattice energy –> less soluble