Jones reductor
... that a Jones reductor can be used to prepare solutions of ions, such as chromium(II), Cr2+, which are immediately oxidized on contact with air?
... that a <b id="mwFSI"><a href="./Jones_reductor" id="mwFSM" rel="mw:WikiLink" title="Jones reductor">Jones reductor</a></b> can be used to prepare <a class="mw-disambig" href="./Solution" id="mwFSQ" rel="mw:WikiLink" title="Solution">solutions</a> of <a href="./Ion" id="mwFSU" rel="mw:WikiLink" title="Ion">ions</a>, such as <a href="./Chromium" id="mwFSY" rel="mw:WikiLink" title="Chromium">chromium</a>(II), Cr<sup id="mwFSc">2+</sup>, which are immediately <a class="mw-redirect" href="./Oxidation" id="mwFSg" rel="mw:WikiLink" title="Oxidation">oxidized</a> on contact with air?