gen chem 1 lab 10: gravimetric analysis of a chloride salt

separation of salt procedure

add .3 g of unknown to beaker, add 150 mL of distilled water and 1 mL of 6 HNO3 add 10 mL of AgNO3, heat solution don’t boil, put filter paper into glass funnel, wet paper, put funnel into another beaker, transfer warm solution into filter paper, let dry

average/ mean

sum of results/ number of results

average deviation

sum if deviations/ number samples

relative deviation

average deviation/ average

standard deviation

square root ( summ of the squares of the deviations from the mean/ number of observations -1)