Recalled a fundamental thingy of reactivity series earlier today.
This guy actually showed us that theres alot of chlorine in Singapore's water compared to WTS water. [Water Treatment System]
He dripped 5 drops of some chemical which I cant be bothered to remember the long name, but it states small amounts of HCl might be found. The untreated tap water turned into yellow-green solution [basically yellowgreen dissolved precipitate]
Then I recalled reactivity series! The drops of liquid had to be H[insert element(s)] and when chlorine ions are present in water, they replace the said element and becomes HCl, while the displaced element is a yellow green solution in water. Sweeeeet.
But this won't help me in HBM, so bye.
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