Which of the following reactions is associated with the lattice energy of CaS (?H°latt)?
A) Ca(s) + S(s) ? CaS(s)
B) CaS(s) ? Ca(s) + S(s)
C) Ca2? (aq) + S2? (aq) ? CaS(s)
D) Ca2? (g) + S2? (g) ? CaS(s)
E) CaS(s) ? Ca2? (aq) + S2? (aq)
Answer: D
Which of the following reactions is associated with the lattice energy of CaS (?H°latt)?
A) Ca(s) + S(s) ? CaS(s)
B) CaS(s) ? Ca(s) + S(s)
C) Ca2? (aq) + S2? (aq) ? CaS(s)
D) Ca2? (g) + S2? (g) ? CaS(s)
E) CaS(s) ? Ca2? (aq) + S2? (aq)
Answer: D