Colligative property measurement is one of the techniques used in the

1.	Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy. If a 40.65 gm sample of K2SO4 and BaSO4 is dissolved in 900 gm of pure water to form a solution ‘A’ at 57∘C, its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at 57∘C is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure BaSO4 is mixed with water at 57∘C it gives the osmotic rise of 4.05×10−5 atm. (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16) Percentage of K2SO4 in the sample is
Answer» Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy. If a 40.65 gm sample of $K_{2} S O_{4}$ and $B a S O_{4}$ is dissolved in 900 gm of pure water to form a solution ‘A’ at $57^{\circ} C$ , its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at $57^{\circ} C$ is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure $B a S O_{4}$ is mixed with water at $57^{\circ} C$ it gives the osmotic rise of $4.05 \times 10^{- 5} atm$ . (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16) Percentage of $K_{2} S O_{4}$ in the sample is

Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy. If a 40.65 gm sample of K2SO4 and BaSO4 is dissolved in 900 gm of pure water to form a solution ‘A’ at 57∘C, its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at 57∘C is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure BaSO4 is mixed with water at 57∘C it gives the osmotic rise of 4.05×10−5 atm. (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16) Percentage of K2SO4 in the sample is

Answer»

Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy.

If a 40.65 gm sample of $K_{2} S O_{4}$ and $B a S O_{4}$ is dissolved in 900 gm of pure water to form a solution ‘A’ at $57^{\circ} C$ , its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at $57^{\circ} C$ is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure $B a S O_{4}$ is mixed with water at $57^{\circ} C$ it gives the osmotic rise of $4.05 \times 10^{- 5} atm$ . (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16)

Percentage of $K_{2} S O_{4}$ in the sample is

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