some of the topics are quite good.
e.g Investigating the analytical techniques for the detection of copper ions,
This investigation can give you more training different kinds of technique and let you know which technique is better, which is cheaper, which is expensive, which is faster, which is time consuming,which is accurate.
e.g. Investigating the effect of fluoride ions on the reaction of calcium carbonate with acid,
This is the investiagtion topic for the industrical desulpurization using limestone process and you know the impurity in limestone such as Al, Fe, trace metals, chloride etc..can affect the reaction.