When a solution of sodium tartrate is added to dilute hydrogen peroxide nothing seems to happen. When a small amount of cobalt chloride solution is added a vigorous reaction occurs. Analysis shows the gas contains a lot of CO2, indicating that besides H2O2 decomposition a lot of tartrate is oxidised . Probably the cobalt catalyses this by forming peroxo and superoxo complexes.
This 4 part series covers how to solder Surface Mount Components, It gives some basic instruction on proper component placement, how to modify standard through hole parts to mount only to the surface and use of your solder iron. The sample Board is H2O2-PWM V2.0.1
