solution studied:

CATIONS

Ca2+

Cu2+

Al3+

Mn2+

Anion C2O42-

CO32-

PO43-

OH-

2. Each of the solutions in PART A and PART B contain only one of the ions studied in this experiment. Identify which ion is present when each of the solutions below are analysed for their chemical content. Explain your reasoning. a) When the sample solution was treated with concentrated ammonia solution a jelly-like (gelatinous) colourless precipitate appears. b) A gas was produced when the sample solution was mixed with a solution of hydrochloric acid. c) A brown solid formed when the sample solution was mixed with a solution of sodium hydroxide. d) A blue coloured solution was formed when concentrated ammonia solution was added to a sample solution. 3. What test was conducted that supported the fact that the OHion makes a solution basic