Question

21. 13.5 g of NaCl is dissolved in 100.0 g of H20. The boiling point of the water after the salt is added is The boiling point elevation constant for water: Kp = 0.512 °C/m. A) 102.4° C B) 101.2°C C) 104.5°C D) 108.4°C 22. A process has an equilibrium constant K of 2.5 x 10' at 300 K. What is AG° at that temperature? A) 19.5 kJ/mol B) 25 kJ/mol C) -19.5 kJ/mol D) 75 kJ/mol 23. In heterogeneous catalysis, the catalyst and reactants are in A) the same B) different C) gaseous phases. D) liquid 24. If the reaction quotient Qe is smaller than K, the reaction will proceed A) to produce more product B) to produce more reactant C) nowhere D) to stoichiometric completion 25. The oxidation number (state) for iron (Fe) in FeCl2 is A)-1 B) +2 C) +3 D) -2