HARDMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistrySolutionsAchiever Section
An aqueous solution of NaCl freezes at –0.186 °C. Given that 0.512 H O b K K kg mol and 1.86 H O f K K kg mol , the elevation in boiling point of this solution is
A.0.0585 °C
B.0.0512 °C✓ Correct
C.1.864 °C
D.0.0265 °C
Explanation
f f T K m i x x b b T K m i x x 0.186 2 1.86 m x x 0.05 / m mol kg SOLUTIONS 69 0.512 2 0.05 0.0512o bT C xx
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