CATHOLIC HIGH SCHOOL - ASKnLearn

31 A thermometer is placed in water and the temperature is measured as shown.An exothermic change takes place as a solid is dissolved in the water. Thetemperature changes by 4.5 °C. What is the final temperature?A 38.0 °C B 38.5 °C C 47.0 °C D 47.5 °C32 In which reaction is the pressure least likely to affect the rate of the reaction?A C(s) + CO 2 (g) 2CO(g)B 2SO 2 (g) + O 2 (g)C N 2 (g) + 3H 2 (g)D NaOH(aq) + HCl(aq)2SO 3 (g)2NH 3 (g)NaCl(aq) + H 2 O(l)33 The diagram shows the fractional distillation of crude oil.Fraction XCrude oilFraction YWhich of the statements about fractions X and Y are correct?X is more flammable than Y X has a higher boiling point than YA Yes YesB Yes NoC No YesD No NoCatholic High School Preliminary Examination III Paper 1