Find the pH using these equations

Question

The acidity or basicity of a solultion is measured using a pH scale. The pH of a solution is given by pH=-log(H) where H is the hydrogen ion concentration of the solution in moles per liter. Acidic solutions have a pH less than 7, and basic solutions have a pH greater than 7. Vinegar has a hydrogen ion concentration of 1.6*10^-3 moles per liter. Find the pH for vinegar.

Answer 1

-log(1.6*10^3)

 

-log(.0016)

 

2.8