An empty evaporating dish weighs 20.0 g. After adding saturated solution of NaNO_3, the dish weighs 66.0 g. When evaporated to dryness, the dish with crystals weighs 41.5 g. Find the solubility of NaNO_3, at 20^@ C.

An empty evaporating dish weighs 20.0 g. After adding saturated soluti

1.	An empty evaporating dish weighs 20.0 g. After adding saturated solution of NaNO_3, the dish weighs 66.0 g. When evaporated to dryness, the dish with crystals weighs 41.5 g. Find the solubility of NaNO_3, at 20^@ C.
Answer» SOLUTION :WEIGHT of SATURATED solution of `NaNO_3 = (66.0 – 20.0) g = 46.0 g` Weight of crystals of` NaNO_3` = (41.5 – 20.0) g = 21.5 g Weight of water in saturated solution = (46.0 – 21.5) g = 24.5 g Solubility of `NaNO_3= ("weightof" NaNO_3"Crystals")/("weight ofwater ") xx 100` `=(21.5 )/( 24.5 ) xx 100 =87.7 g ` Solubility of `NaNO_3` at `20^@ ` Cis = 87.7 in100 g `H_2 O`