Answer to Question #188934 in General Chemistry for Ace

Question #188934

A solution prepared from 0.3 g of an unknown nonvolatile solute and 30 g CCI, has a boiling point of 0.392 °C higher than that pure CCl. What is the molecular weight of the solute?


1
Expert's answer
2021-05-04T14:15:59-0400


Answer:-


(We know that molal boiling point elevation constant of ccl4 is 5.02 oC/m)


Solute = 0.3g

Solvent= 30 g

"\\Delta t_b=0.392 \\ ^oC \\\\\n\\Delta t_b=k_b\u00d7m \\\\"

"=k_b\u00d7{w_{solute}\\over m_{solute}\u00d7({w_{solvent}\\over1000})kg}"

"0.392=5.02\u00d7{0.3\u00d71000\\over M_b\u00d730 }"


"\\boxed{M_b=128.06 g} \\ answer"



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