Exp 5.1 - Buffers Indicators Supp Buffers Indicators Supp...

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uffers & Indicators Supp Buffers & Indicators Supp 2/1/2010 Buffers & Indicators Supp 1
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For each slide, the order should go from left to right. 2/1/2010 Buffers & Indicators Supp 2
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50-mL A A nm 18 Flask 1 Flask 1 Flask 8 50-mL bance 8 Absor b λ max (In - ) λ max (HIn) 2/1/2010 Lecture 4 3 λ , nm ~700
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Flask 2 eaker 2- Beaker 2+b 1. Pipet 2-mL bcg 2. Add 1M HCl dropwise until 2. Add 1M NaOH dropwise until H>x Swirl 1. 50-mL 0.1M HAc 1. 50-mL 0.1M HAc 2. Fill to the mark with 0.1M HAc 50-mL 50-mL Beaker 2 a pH<x. Swirl pH>x. Swirl 50-mL Flask 2-a Flask 2+b . Pipet 2- L bcg 3. Pipet 2-mL bcg 0 L 0 L 3. Pipet 2 mL bcg Measure pH 5. Measure pH 4. Fill to the mark with 2-a solution. Shake Well ! 4. Fill to the mark with 2+b beaker. Shake Well ! 50-mL 50-mL 3. Measure pH (=x) Absorbance 5. Measure pH 6. Absorbance at λ max (HIn) 7. Absorbance n 7. Absorbance 6. Absorbance at λ max (HIn) 4. Absorbance at λ max (HIn) 5. Absorbance at λ max (In - ) 2/1/2010 Buffers & Indicators Supp 4 at λ max (In - ) at λ max (In - )
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P i t2 Lb Flask 3 eaker 3- Beaker 3+b 1. Pipet 2-mL bcg 50-mL 50-mL 2. Fill to the mark with V a -mL, 0.1M HAc & V b -mL, 0.2M NaAc mixture 2. Add 1M HCl 1. Mix V a -mL, 0.1M HAc & V b -mL, 0.2M NaAc 2. Add 1M NaOH 1. Mix V a -mL, 0.1M HAc & V b -mL, 0.2M NaAc Beaker 3 a
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Exp 5.1 - Buffers Indicators Supp Buffers Indicators Supp...

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