Problem: Which of the following compounds requires the most energy to convert one mole of the solid into separate ions?(a) K2S(b) K2O(c) CaS(d) Cs2S(e) CaO

FREE Expert Solution
92% (317 ratings)
FREE Expert Solution

Lattice Energy = |cation charge×anion charge|cation radius + anion radius


K2S

Lattice energy = |+1×-2|4+3

Lattice energy = 0.2857


K2O

Lattice energy = |+1×-2|4+2

Lattice energy = 0.3333


CaS

Lattice energy = |+2×-2|4+3

Lattice energy = 0.5714


92% (317 ratings)
Problem Details

Which of the following compounds requires the most energy to convert one mole of the solid into separate ions?
(a) K2S
(b) K2O
(c) CaS
(d) Cs2S
(e) CaO

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lattice Energy concept. You can view video lessons to learn Lattice Energy Or if you need more Lattice Energy practice, you can also practice Lattice Energy practice problems .

How long does this problem take to solve?

Our expert Chemistry tutor, Shreya took 2 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Ma's class at FSU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in . You can also practice practice problems .