Base your answers to questions 55 to 57 on the
information below.

The compounds KNO_{3} and NaNO_{3} are
soluble in water.

55 Compare the entropy of 30. grams of solid KNO_{3} at 20.°C
with the entropy of 30. grams of KNO_{3} dissolved in 100. grams
of water at 20.°C. [1]

Answer==> the solid has
less entropy |

56 Explain why the total thermal energy of a sample containing 22.2
grams of NaNO_{3} dissolved in 200. grams of water at 20.°C is
greater than the total thermal energy of a sample containing 11.1 grams
of NaNO_{3} dissolved in 100. grams of water at 20.°C. [1]

Answer==> 22.2g produces more heat than
11.1g when dissolved |

57 Compare the boiling point of a NaNO_{3} solution at standard
pressure to the boiling point of water at standard pressure. [1]

Answer==> the solution has a higher
boiling point |