find the weight of Sodium nitrate required to prepare 60g pure crystal from its saturated solution at 70°C. Solubility of sodium nitrate is 140g at 70°C and 100g at 25°C.
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find the weight of Sodium nitrate required to prepare 60g pure crystal from its saturated solution at 70°C. Solubility of sodium nitrate is 140g at 70°C and 100g at 25°C.
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Q. Find the weight of Sodium nitrate required to prepare 60g pure crystal from its saturated solution at 70°C. Solubility of sodium nitrate is 140g at 70°C and 100g at 25°C.
Amount of crystals you will get when the solution will be cooled from 70°C to 25°C
To obtain 40 g of crystals, sodium nitrate taken is 140 g.
To obtain 60 g crystals, sodium nitrate required
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Solubility at 70°c=140g
Solubility at 70°c=100g
Amount of crystals obtained when the solution is cooled from 70°c to 25°c=140-100
=40g
To obtain 40g of crystals sodium nitrate is taken =140g
So,
To obtain 60g crystals , sodium nitrate required will be= 140/40*60
=210g