Editing PH Indicator Lab And Questions
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This lab will be student determined. The task is to determine the pH (or range) of a solution by using several pH indicators.<br> There are four solutions:<br> *Solution A *Solution B *Solution C *Solution D <br> The pH indicators are:<br> *Bromothymol blue *Methyl orange *Thymol blue *Bromocresol Green *Phenollphthalein *Phenol Red <br> Besides your other data table, please include a table of pH indicator, colors and pH endpoints.<br> <br> <br> <b>Questions</b> (to be answered in Question section of lab report)<br> <br> 1. Explain how the structure of the pH indicator determines the color of the indicator at the different pH conditions.<br> <br> 2. Explain including using mathematics that most of the pH indicator change from one color to another in approximately 1 unit of pH.<br> <br> 3. Determine the K<sub>a</sub> of each of the pH indicators (if needed use the simple average of the pH range as the endpoint).<br> <br> 4. Explain how to determine the appropriate pH indicator for a given titration.<br> <br> <br> <br>
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