question_answer 34)

  The boiling points of diethyl ether, acetone and n-butyl alcohol are 35°C, 56°C and 118°C, respectively. Which one of the following correctly represents their boiling points in kelvin scale? (a) 306 K, 329 K, 391 K   (b) 308 K, 329 K, 392 K      (c) 308 K, 329 K, 391 K   (d) 329 K, 392 K, 308 K

Answer:

  (c) The correct order of boiling points of diethyl ether, acetone and n-butyl alcohol in kelvin scale is 308 K, 329 K and 391 K, which can be explained as (PC + 273 = TK). Boiling point of diethyl ether=35°C+273=308 K Boiling point of acetone = 56°C + 273 = 329 K Boiling point of n-butyl alcohol = 118°C + 273 = 391 K