8)The lattice enthalpy of potassium chloride, (triangle)H° for KCI(s) + K+ (g) + Cl-(g)

is 717 kJ/mol; the heat of solution in making up 1 M KCl(aq) is +18.0 kJ/mol.

From these data, obtain the sum of the heats of hydration of K+ and Cl-

That is, obtain the sum of (triangle)H° values for

K+ (g)—>K+ (aq)
CI- (g)—> Cl- (aq)

(Triangle)H =kJ/mol

If the heat of hydration of CI- is-338 kJ/mol, what is the heat of hydration of K+?

Heat of hydration=kJ/ mol

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices