Evaluate:

f.) In order to improve the conducted experiment that would result in an increased yield, the silver residue had to be made sure that it was dried completely. Also, the amount of silver residue must be maintained as much amount as possible during the decantation process because if  there's too much silver residue lost, then the percent yield will decrease.


g.) i. If the silver residue will not be completely dried, the mass of the water would be added to the mass of the silver, thus would affect the actual yield of the product. The percent yield would be higher than hundred percent because the actual yield would be higher than the theoretical yield.

ii.) The percent yield of the reaction wouldn't be affected even though the silver nitrate used was old and had deteriorated over time due to some conditions such as exposure to ultraviolet lights, and decreased its mass as a result. As long as mass of the silver nitrate used was not changed before the reaction (or during), it wouldn't affect the percent yield.  

iii.) If the water used was tap water instead of distilled, the percent yield would be affected because some of the chloride ions in the tap water will react  to silver thus making the mass of the silver to decrease because of double displacement reaction compared to a single displacement reaction ( with distilled water ) where the silver was left not reacted to any other substances.

Sources of Error in the Experiment: 
                     * If the mass of the silver residue was measured while it's not dried completely, it will cause a huge amount of actual yield because some of the mass of the water left in the residue will add up in the mass of the silver.
                     * The weighing scale is not calibrated correctly or talking and moving a lot while measuring the mass of a substance or object that may affect the resulting mass given by the scale. This is because the weighing scale used to measure things in the experiment is so sensitive and can be affected by just vibrations in the air.
                    * Many silver residue were lost during the decantation process, that might result to very low percentage yield.
                    * The data collected were not rounded off correctly or rounded to insignificant digit(in this case, it has to be rounded to the nearest 0.01 digit)
                    * The percent yield will be far less if the water used is tap water instead of distilled water because the chloride ions in the tap water will react with silver using up some of it, resulting to decrease in mass.