Acid Bases Worksheet

pH and Buffer Worksheet Name:___Isaiah Reichenbach______ 1) Complete the following table to review the information on acids, bases and pH (3pts) Table 3. Acid and Base Interrelationships [H + ] [OH - ] pH pOH acidic, basic or neutral 10 -3 M 10 -11 M 3 11 Acidic 10 -12 M 10 -2 M 12 2 Basic 10 -8 M 10 -6 M 8 6 Basic 10 -10 M 10 -4 M 10 4 Basic 10 -7 M 10 -7 M 7 7 Neutral 2) (4pts) What is the hypothesis that you tested? What is the null hypothesis? The increasing amount of lemon drops on a solution will decrease the pH over time. pH will decrease with increase of lemon drops. 3) (0pts) What unknown did you have? A or B A 4) (4pts) Create a graph using Excel file attached to show your results of the difference between water and buffer as well as your unknown. Be sure it is complete and labeled appropriately. 5) 6) (2pts) Based on the data you have recorded and graphed, do you accept or reject your hypothesis? Write a brief statement below about how your results lead you to either accept or reject your hypothesis. The hypothesis was accepted as the pH levels started to become more acidic with the addition of more lemon drops.