here:
for cations reactivity series:
please-K
send-Na
cats-Ca
monkeys-Mg
and-Al
zebras-Zn
in-iron
large-lead
hired-H
cages-Cu
make-Hg
sure-Ag
padlocked-platinum
for anions:
someone -sulphate
only-hydroxide(gives oxygen on oxidation)
nice-nitrate
cleans-chloride
broken -bromide
items-iodide
for crude oil fractions:
please-petroleum gases
never - naphtha
kill-kerosene
dolphins-diesel oil
living-lubricating oil
bravely-bitumen
for litmus paper,here's how i avoid confusion:
Be right back
blue-red-blue
blue-red(acid) red-blue(base)
for solubilities,
PCB for sulphates (Pb-lead,Ca-calcium,Ba-barium)