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owLv2 Online teaching and i, × Assignmen | a search 11096 Topics References] Use the References to access important values if needed for this question. The boiling point of water. H20. as 100.000 C at 1 atmosphere Kb(water) 0.512 °C/m In a laboratory experiment, students synthesized a new compound and found that when 11.69 grams of the compound were dissolved in 285.6 grams of water, the solution began to boil at 100.337 C. The compound was also found to be nonvolatile and a non-electrolyte What is the molecular weight they determined tor thas compound Suhmit Anser 11:31 PM

Explanation / Answer

Let molecular weight of compound is M gm / mole.

molality of solution = 11.69 * 1000 / M * 285.6 = 40.93 / M

Vant hoff factor (i) = 1 as it is nonelectrolyte.

we know,

delta Tb = i * Kb * m

(100.337 - 100.00) = 1 * 0.512 * 40.93 / M

M = 62.19 gm / mole.

so molecular weight of compound is 62.19 gm / mole.

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