The platinum electrode is used as a conductive surface to facilitate electron transfer in the electrochemical reaction. It also provides a stable and inert surface for the reaction to occur on.
HCl, or hydrochloric acid, is added to the standard hydrogen electrode to create a more acidic environment. This helps to maintain the stability and accuracy of the electrode by preventing any potential changes in pH.
While platinum is the most commonly used electrode in a standard hydrogen electrode, other materials such as gold, silver, or carbon can also be used. However, platinum is preferred due to its high conductivity and chemical stability.
The standard hydrogen electrode measures the potential of other electrodes by comparing them to the known potential of the hydrogen electrode. The electrode potential is measured based on the difference in potential between the two electrodes.
Yes, it is important to handle HCl with caution as it is a strong acid and can cause burns. Proper protective equipment, such as gloves and goggles, should be worn when handling both the platinum electrode and HCl. Additionally, the electrode should be properly cleaned and stored after use to avoid any potential contamination or damage.