# Lab Report Acid Base Titration

Objectives: 1. To determine the concentration of acid using titration. 2. Skills of titration techniques.

Apparatus: 1. 250 volumetric flask 2. 10mL measuring cylinder 3. 25mL pipette 4. 50mL burette 5. 250mL beaker 6. 150mL conical flask 7. Retord stand 8. White tile 9. Stopwatch 10. Pipette bulb

Chemicals: 1. HCl solution 2. 0.1M NaOH solution 3. H2SO4 solution 4. Distilled water 5. phenolphthalein

Introduction.

An acid-base titration is the determination of the concentration of an acid or base by exactly neutralizing the acid/base with an acid or base of known concentration. This allows for quantitative analysis of the concentration of an unknown acid

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Result.

Using HCl | | 1 | 2 | 3 | average | Volume of acid (mL) (±0.00) | 25.0 | 25.0 | 25.0 | 25.0 | Final volume of base (mL) (±0.000) | 9.70 | 19.70 | 29.70 | 19.70 | Initial volume of base (mL) (±0.000) | 0.00 | 9.70 | 19.70 | 9.8 | Volume of base used (mL) (±0.000) | 9.70 | 10.00 | 10.00 | 9.90 | Molarity of acid (M) | 0.04 | 0.04 | 0.04 | 0.04 | | | | | |

Using H2SO4 | | 1 | 2 | 3 | average | Volume of acid (mL) (±0.00) | 25.0 | 25.0 | 25.0 | 25.0 | Final volume of base (mL) (±0.000) | 19.50 | 39.60 | 59.30 | 39.47 | Initial volume of base (mL) (±0.000) | 0.00 | 19.50 | 39.60 | 19.70 | Volume of base used (mL) (±0.000) | 19.50 | 20.1 | 19.70 | 19.77 | Molarity of acid (M) | 0.04 | 0.04 | 0.04 | 0.04 | | | | | |

Calculation.

Discussion & Questions.

1) Why is