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Direct linkSmith, Garon C.; Hossain, Md Mainul; Barry, Daniel D. – Journal of Chemical Education, 2018
Diluting a system with metal complexes can sometimes cause free metal ions to increase in concentration. This paper describes "metal ion anti-buffering", a situation in which free metal ion concentrations rapidly increase as system dilution drives dissociation. It only occurs under excess free ligand conditions when a solution is…
Descriptors: Science Instruction, College Science, Chemistry, Computer Assisted Instruction
Smith, Garon C.; Hossain, Md Mainul – Journal of Chemical Education, 2017
Species TOPOS is a free software package for generating three-dimensional (3-D) topographic surfaces ("topos") for acid-base equilibrium studies. This upgrade adds 3-D species distribution topos to earlier surfaces that showed pH and buffer capacity behavior during titration and dilution procedures. It constructs topos by plotting…
Descriptors: Computer Software, Science Instruction, Educational Technology, Technology Uses in Education
