Description of apparatus :
The Hanna pH 210, pH 211, pH 212 and pH 213 are microprocessor- based pH and Temperature bench meters. pH 211 and pH 213 can also measure ion concentration (ISE) and Oxidation Reduction Potential (ORP) in the mV range. pH measurements are compensated for temperature effect manually or automatically with the HI 7669/2W temperature probe.
Experiments done on it:
1. Neutralization of aqueous solution of acetic acid
The objective of this experiment is to determine the order of the reaction and the value of combined mass transfer and kinetic rate constant.
Dilute acetic acid (such as vinegar) with a pH of around 3.0 is a reasonably effective and inexpensive of the weak organic acids present in human body.This acid may then be employed for simple laboratory simulation of the biochemical processes associated with neutralization by commercial antacids used to relieve gastric distress. The experiment is based on the analysis of combined mass transfer and reaction kinetics.
2. For research and preparing solutions with exact required concentration