Question
Give reasons:
Aluminium utensils should not be kept in water overnight.
Solution
This is because aluminium reacts with H2O and dissolved O2 to form a thin film of aluminium oxide along with dihydrogen.

A very-very small quantity of Al2O3 may dissolve in water to give a few ppm of Al3+ions in the solution. Accumulation of these Al3+ ions can cause permanent damage to the human systems. Hence, drinking water should not be kept in aluminium utensils overnight.

A very-very small quantity of Al2O3 may dissolve in water to give a few ppm of Al3+ions in the solution. Accumulation of these Al3+ ions can cause permanent damage to the human systems. Hence, drinking water should not be kept in aluminium utensils overnight.