Instructions: Be sure to attend the live lab session in ClassConnect and read lesson 1.07 Learn in the course (1.07 Laboratory and 1.07 Investigation). Part I: Before you do the data, answer these questions!
1) What is the purpose or question of this lab investigation?

2) Write a hypothesis in the if-then format.

3) Define independent variables. What is the independent variable in this lab?

4) Define the dependent variable. What is the dependent variable in this lab?

5) What two variables should be kept constant? Explain why it is important to keep these variables constant.

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.