You must have your student I.D. card with you the day you perform this experiment. Background Gravimetric methods of analysis are in general the most accurate of the quantitative methods. This is because mass can be measured with a high degree of precision and accuracy.
Most gravimetric analysis require quantitative transfer and drying of a precipitate.
This is a time consuming and error-ridden step in the analysis. In this experiment, gravimetry is combined with electrochemistry to eliminate problems associated with precipitation reaction and quantitative precipitate transfer and preparation. The method used is called electrogravimetry . A common example of electrogravimetry is the analysis of copper. Copper is reduced at potentials more positive than the reduction of hydrogen ion, so it can readily be deposited on a platinum cathode from acidic solutions.