A buffer is a solution which resists changes in pH. A buffer normally consists of a weak acid and its conjugate base or a weak base and its conjugate acid.
- Calibrate pH meter.
- Measure desired amount of weak acid/base needed for desired molarity at desired volume.
- Measure 60% of the desired volume of distilled water into a beaker.
- Mix weak acid/base in water with a stirbar.
- Keeping the mixture stirring add the pH probe into the beaker.
- Add HCl or NaOH until the desired pH is reached.
- Once the desired pH is reached, remove and wash the pH probe.
- Add distilled water to the solution until the desired volume is reached.
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