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A solution containing 18g of non - volat...

A solution containing 18g of non - volatile non - electrolyte solute is dissolved in 200g of water freezes at 272.07K. Calculate the molecular mass of solute. Given `K_(f)=1.86kg//mol` and freezing point of water = 273K

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`/_\T_f=K_fpropm` or `(K_fxxw_2xx1000)/(M_2xxw_1)`
`M_2=(1.86xx18xx1000)/((273-272.07)xx200)=18.96=182g//mol`
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