chapter14 - Homework Chapter 14 14.4 Compound Molality...

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Homework Chapter 14 14.4 Compound Molality Weight percent Mole fraction KNO 3 1.10 10.0 0.0194 CH 3 CO 2 H 0.0183 0.110 3.30 × 10 –4 HOC 2 H 4 OH 3.54 18.0 0.0599 KNO 3 : 10.0 g KNO 3 dissolved in 90.0 g H 2 O 3 3 0989 . 0 1 . 101 1 0 . 10 KNO mol g KNO mol g = O H mol g O H mol g 2 2 99 . 4 02 . 18 1 0 . 90 = m O H kg KNO mol solven of kg solute of amount m 10 . 1 0900 . 0 0989 . 0 2 3 = = = X KNO 3 = 0.0989 mol 0.0989 mol + 4.99 mol = 0.0194 CH 3 CO 2 H: 0.0183 mol CH 3 CO 2 H dissolved in 1.00 kg H 2 O H CO CH g H CO CH mol g mol 2 3 2 3 10 . 1 1 05 . 60 0183 . 0 = O H mol g O H mol g 2 2 3 5 . 55 02 . 18 1 10 00 . 1 = × % 110 . 0 100 ) 10 00 . 1 ( 10 . 1 10 . 1 % 3 = × + = g g g Weight 4 10 30 . 3 5 . 55 0183 . 0 0183 . 0 2 3 × = + = Χ mol mol mol H CO CH HOCH 2 CH 2 OH: 18.0 g HOCH 2 CH 2 OH dissolved in 82.0 g H
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chapter14 - Homework Chapter 14 14.4 Compound Molality...

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