4.0.12M aqueous standard nitric (v) acid was titrated against 25cm of aqueous sodium hydroxide solutions in a conical flask. 11.5cm of acid was required to react completely with alkali. a) Name two apparatus that can be used in this experiment other than conical flask. (1 mk) b) Calculate the concentration of sodium hydroxide used in experiment. = 0.Qss c) The table below shows the tests carried out on three portions of a compound and results obtained. Study it and answer the questions that follow. Test Addition of a few drops of aqueous ammonia to the first portion until excess Addition of acidified barium nitrate to the second portion Addition of few drops of lead (II) nitrate to the third portion i) Observations White precipitate soluble in excess White precipitate formed White precipitate formed 11 Identify the cation and anion present in the compound. (1 mk) ii) Write the ionic equations in first portion and third portion. Define the following terms a) Solubility Waxim- Can dissolve in b) Saturated solution As- uume Mer c) Fractional crystallization.