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Chemistry

How much would the boiling point of water increase if 4 mole of NaCI were added to 1 kg of water?

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June 28, 2017 12:06PM

Change in boiling point = (i)(m)(K)i = van't Hoff factor which for NaCl is 2 (2 particles form upon ionization)

m = molality = moles/kg = 4 moles/1 kg = 4

K = boiling point constant for water = 0.512 degrees/m

∆T = (2)(4)(0.512) = 4.1 degrees

So, the boiling point of water would increase by 4.1 degrees C (4 degrees to 1 sig. fig.)