Reduction of chromium(VI) by phosphonic acid |
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| Authors: | Khan Zaheer Hashmi Athar A. Kabir-ud-Din |
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| Affiliation: | (1) Chemistry Department, Jamia Millia Islamia, Jamia Nagar, New Delhi, India;(2) Chemistry Department, Aligarh Muslim University, Aligarh, India |
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| Abstract: | The kinetics of electron transfer between chromium(VI) and H3PO3, yielding chromium(III), have been investigated in HClO4 and H2SO4 media by visible spectrophotometry. The rate of reaction increased with increasing [H2SO4] and [HClO4]. A rate law based on ester formation preceding the electron transfer has been established and a possible mechanism has been proposed. The mechanism and the derived rate law are consistent with the observed kinetics. This revised version was published online in June 2006 with corrections to the Cover Date. |
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