Question

Which of the following accurately describes the pH scale? 

Answer 1

The correct answer is B. The greater the pH is, the lower the acidity is.

Answer 2

Answer is: B. The greater the pH is, the lower the acidity is.

pH (potential of hydrogen) is a numeric scale used to specify the acidity or basicity an aqueous solution.

When pH is less than seven (pH<7), solution is acidic.

When is equal seven (pH = 7), solution is neutral.  

When pH is greater than seven (pH > 7), solution is basic.  

An acid is a molecule or ion capable of donating proton or hydrogen ion H⁺.

For example, hydrochloric acid( HCl) is acidic, it ionizes in water solution and gives the hydrogen cations and chloride anions (Cl⁻):  

HCl(aq) → Cl⁻(aq) + H⁺(aq).