Question 3: pH and pOH A. What information does the pH of a solution give?

B. What equation is used to calculate the pH of a solution?

C. What is the poH equation? How can pOH be determined from pH?

D. What are the hydrogen ion and hydroxide ion concentrations in water? What is the pH and
pOH of pure water? (1 point)

Which of the following describes a situation where competition between producers exists

Which of the following units is not an official si unit

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.