1.

A solution containing 0.5216 g of non-volatile solute 'A' (molar wt. = 128.16 g mol−1) in 50 mL of CCl4 shows boiling-point elevation of 0.402oC while a solution of 0.6216 g of an unknown solute in the same weight of solvent gave a boiling-point elevation of 0.647oC. Find the molecular mass of the unknown solute.

Answer»

A solution containing 0.5216 g of non-volatile solute 'A' (molar wt. = 128.16 g mol1) in 50 mL of CCl4 shows boiling-point elevation of 0.402oC while a solution of 0.6216 g of an unknown solute in the same weight of solvent gave a boiling-point elevation of 0.647oC. Find the molecular mass of the unknown solute.



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