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Response to high acidity and basicity at a platinum electrode in chronopotentiometry |
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| Authors: | Jianping Li Tuzhi Peng |
| Institution: | a Department of Chemistry, Institute of Microanalysis Systems, Xixi Campus, Zhejiang University, Hangzhou 310028, PR China b Department of Applied Chemistry, Guilin Institute of Technology, Guilin 541004, PR China |
| Abstract: | A simple and rapid method is developed to determine the high acidity and the basicity of solutions by chronopotentiometry with a platinum working electrode. The acidity range from 5.0 mol/l H+ to 1.0 mol/l OH− can be measured by the adjustment of deposition potential and time. The response mechanism to acidity and basicity has been explored. The transition potential plateau in chronopotentiograms is caused from the oxidation of hydrogen adsorbed on electrode surface. |
| Keywords: | Measurement of acidity Strong acid Strong base Chronopotentiometry Platinum electrode |
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