JAMB - Chemistry (2002 - No. 17)
Three drops of a 1.0 mol dm-3 solution of NaOH are added to 20 cm3 of a solution of pH 8.4. The pH of the resulting solution will?
Close to that of pure water
Unaltered
Greater than 8.4
Less than 8.4
설명
A strong base is one that fully dissociates to give ions in solution. Weak bases only partially dissociate in a solution,
while the strong bases dissociate fully in a solution. Weak bases have pH 7.3 – 10, strong ones have pH 10 – 14.