Calculate the pH of a 0.500-L solution that contains 0.15 M formic acid, HCOOH (Ka =1.8 x 10-4 ), and 0.20 M sodium formate, HCOONa. Then calculate the pH of the solution after the addition of 10.0 mL of 12.0 M NaOH.

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car