Investigating the pH of solutions is easy when the students used PASCO wireless pH meters.
They investigated a variety of situations such as:
- pH differences between strong & weak acids
- pH values of common house hold materials
- pH of salt solutions
They found being able to measure the pH easily and quickly allowed them to measure many substances with ease but also gave them more time to really get into the theory behind their investigations.
Using data loggers (that are correctly calibrated) means measurements are more accurate than using chemical indicators.