What advantage do we have if we use a computer to simulate an experiment ?  This reminds me a conversation with Dr J Holbrook when we watched an animation of titration.  If we can allow students to carry out the real experiment in a laboratory, why bother to carry out a titration simulation using computer.  If the computer can do a real volumetric analysis, not a simulation, do we need to assess titration technique ?   We did not come up to any conclusion.  The following links are the simulations of two experiments in rate of reaction.  Please justify the use of them in learning and teaching.  

http://chung.sk.tripod.com/08/colorimeter.swf

http://chung.sk.tripod.com/08/rate1.swf

The simulation can be used to find

(a) the heat of neutralization, and

(b) the heat of reaction for ammonium and hydroxide

etc.

http://www.chm.davidson.edu/java/calorimetry/calorimetry.html

(只有英文版)