WAEC - Chemistry (2000 - No. 16)

If a solution has a pH of 2, it can be concluded that it

is a weak electrolyte

has hyrogen ion concentration of 0.2 mol dm^-3

is twice as acidic as a solution of pH 1,

will produce effervescence with magnesium ribbon

When an acid reacts with a metal,Magnesium ribbon, there is an effervescence of hydrogen gas, H2.