Answer: 1.5
Step-by-step explanation:
The acid, HCIO4 ionizes to give hydrogen ion (H+) and a conjugate base as follows:
HCIO4(aq) <---> H+(aq) + CIO4-(aq)
Hence, the H+ has also have a concentration of 0.0282 M
Mathematically, pH is expressed as:
pH = -log(H+), where H+ is the concentration of hydrogen ion.
So, for HCIO4
pH = - log (0.0282 M)
pH = - (-1.5497) (The two minus signs will cancel out)
pH = 1.5497
Round the pH value to the nearest tenth as 1.5
Thus, the pH of 0.0282 M of HCIO4 is 1.5, also HCIO4 is strongly acidic since pH values less than 7 are regarded as acidic.