Question

How much energy in kJ is required to vaporize one gram of copper? How much energy for 1 gram of titanium? Which metal has the stronger atomic bond?

Answer 1

Solution :-

a change directly from the solid to the gaseous state without becoming liquid is known as sublimation.
Hence the sublimation enthalpy of cupper is the energy required to vaporize it..
=> energy require to vaporize (1mol=64gm) cu = 338 KJ
=> energy require to vaporize (1 gm) aluminium = 326/27 KJ = 5. 28 KJ

similarly for iron

=> energy require to vaporize (1mol=48gm) titanium = 473 KJ
=> energy require to vaporize (1 gm) iron = 473/48 KJ = 9.859.

and since energy required to vaporize titanium is more than that of cu , titanium has stronger