Determination of Chlorinity of Water without the Use of Chromate Indicator

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Concentartion (mM)</td><td align="center">pH range</td><td align="center"><svg height="11.425" id="M9" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.025 11.425" width="11.025" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.363)"><path d="M600 0h-557v24l268 633l28 8l261 -641v-24zM497 50l-194 489l-196 -489h390z" id="x394"></path></g>
</svg>pH</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">0.05</td><td align="center">7.8–5.4</td><td align="center">2.4</td></tr><tr><td align="left">0.20</td><td align="center">7.8–4.8</td><td align="center">3.0</td></tr><tr><td align="left">2.0</td><td align="center">8.0–3.8</td><td align="center">4.2</td></tr><tr><td align="left">5.0</td><td align="center">8.0–3.6</td><td align="center">4.4</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Change in pH at various concentrations of Na<sub>2</sub>HPO<sub>4</sub>.

International Journal of Analytical Chemistry

tab2

Table 2

Table 2: Determination of Chlorinity of Water without the Use of Chromate Indicator 