Calculation Two

Instructions

Please attempt the calculation, then choose the best answer from those given and finally select the submit button to see whether you were correct.
Calculate the entropy changes at 25 C, for the following reactions:
	Zn2+	+	2NH3	<=>	[Zn(NH3)2]2+
					delta H	= -28.03 kJ mol-1
					log10 beta2 = 5.01

	Zn2+	+	en	<=>	[Zn(en)]2+
					delta H	= -27.6 kJ mol-1
					log10 beta  = 6.15
	(NB R=8.314 JK-1mol-1)
  1. -190, -214 JK-1mol-1
  2. 1.9, 25.2 JK-1mol-1
  3. -5.3, -4.1 JK-1mol-1
  4. 23, 300 JK-1mol-1
  5. None of these, or I don't know.

Back to Coordination Chemistry course outline.

Return to Chemistry, UWI-Mona, Home Page
Feb-97, rjl