Question

The acidity or alkalinity (basicity ) of an unknown aqueous solution is indicated by its

A. pH value
b. electronegativity value
c. percent by mass concentration
D. percent by valume concentrion

help me which answer ?

Answer 1

The correct answer is A. PH value

If a substance is very acidity it has a high PH, if it is less acidic (alkalinity) is has a lower PH. For instance, water has a PH of 7 because it is in between of being acidic and alkaline.