Question 3 For the following reaction between aqueous calcium bromide and solid tin. a) List all the species in solutions then Identify the strongest oxidizing agent and the strongest reducing agent. (4 marks) b) Predict whether the reaction will proceed spontaneously, using the spontaneity rule, and calculate the cell potential. (4 marks) Question 1 The following observations involving metals R, S, T, and U were made: (1) When a strip of Ris placed in a solution of S2+ ions, no reaction was observed. (2) Similarly, R and T* ions produce no reaction. I (3) When a strip of U is placed in a solution of T'ions, black metallic T deposits on the surface of U and the solution tests positively for U2* ions. (4) When a bar of Sis placed in a solution of U2+ ions, metallic U appears on the surface of S and 52+ ions are found in the solution Arrange the ions R*, $2+, T and U2+ in order of their ability to attract electrons. On the top, place the ion that best attracts electrons. (4 marks)