Investigation (reaction of transition metal ions)

Results

Risk assessment

Chromium hexaqua can be toxic, medium risks; can cause problems in the body such as breathing or lungs problems if inhaled too much. Hexaqua ions are quite acidic because of their pH, 3+ ions are more acidic than 2+ ions.

Exposure to cobalt hexaqua during long period of time can cause health risks such as damages to the lung

Hydrochloric acid is a very corrosive substance and therefore can seriously damage the eyes and skin. It can also cause problems to the respiratory tract by inflaming it. It can also cause severe burns to organs inside the body. Swallowing causes severe irritation and tissue destruction of the oesophagus and the digestive tract which may be fatal.

The sodium hydroxide is also corrosive which means it can burn the skin when in direct contact with it.

Swallowing copper haxaqua can cause harm; it can cause Irritation to the eyes and skin. It can also be very toxic to aquatic organisms, might cause long-term adverse effects in the aquatic environment.

Conclusion

According to my results, most of the ions reacted with the other chemicals (HCL, sodium Hydroxide, the sodium carbonate, the pH and the ammonia). We can see from my table the different colour changes the ions go through with every chemicals and we can also the texture some of them obtain. For example in the presence of ammonia, the chromium went from liquid to a solid state.

Evaluation

I am satisfied with the way the investigation went and the results I obtained from it. However there are some changes that I could make to it if I was to do it again. I was to repeat that investigation, I would make sure I measure out the right amount of ions and chemicals I need to carry out my investigation as the mount of chemical can make a difference to the outcome of the investigation.