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
The correct answer is: D
Explanation
When an acid reacts with a metal,Magnesium ribbon, there is an effervescence of hydrogen gas, H2.