Acids And Bases Worksheet
ADVERTISEMENT
1
2Review Sheet:
The ultimate way to prepare for your assessment is to reflect on why the homework assignments that we completed
were done, and to understand the objectives of each assignment. Do you want more practice before your
assessment? Look at your homework; ensure you understand how to get the correct answer!
PLEASE study your pH packet for this section, and use chapter 19 in the book. THIS REVIEW IS NOT
COMPREHENSIVE, it is meant to help clarify the major concepts. Ensure that you can answer all questions and
aspects of the assessment rubric, attached to your project description. The in-class review sheet will also help you;
ensure you understand these solved problems.
Log Chart Usage: Either you can or you cannnot use the chart at this point. Bring a calculator to perform log and
anti-log functions if the chart confuses you. If you like the chart, make a crib-sheet for instructions on how to use
the chart if you need help.
The First Homework Assignment: The pH Scale.
-This assignment includes the concept of the log and the antilog. Usage of the log-chart is described above.
-The pH scale describes how acidic or basic something is. Points to remember:
1-Water is the definition of neutrality.
2-a value of 0 on the scale is very acidic, a value of 14 is very basic.
3- pAnything = - log [anything]
4- [ ] means concentration.
The Second Homework Assignment: Calculations involving weak and strong acids.
-Weak and strong acids are explored in this assignment.
-Points to Remember.
1- Concentration is moles / Liters.
2- Strong acids completely ionize in water. Here, we don’t use Ka to calculate [H+]
3- Weak acids do not completely ionize in water. Here, we use Ka to calculate [H+]
2
4- Ka = x
/ [Acid] , check your notes to ensure you understand WHY.
5- Diprotic strong acids make 2 Molar H+ per 1 Molar Acid, we only considered strong diprotic acids.
The Third Homework Assignment: The ionization Constant for water.
Kw is used in this assignment in order to
-Not reinforced is that pOH = -log [OH-]
-Not reinforced is that 14 = pH + pOH
The Fourth Homework Assignment: Titrations.
-Neturalization happens when the same number of OH- and H+ ions combine.
-Indicators allow us to detect pH change, and to calculate how much acid or base was needed in order to perform a
titation.
-One of the acids in this homework was a weak acid, and therefore additional calculations were necessary in order to
relate the[H+] to the [Acid]
-One of the bases, and at least one of the acids are diprotic in this assignment. This changes the answers!
Self-Sudy Questions:
A
First Homework:
A1.
What is the definition of neutrality?
A2.
Is pH 2 acidic, basic, very acidic, or very basic?
A3.
A solution has a pH of 1. Does this mean the solution contains a strong acid?
A4.
Does .5 moles HCl in .5 L H
O have the same HCl concentration as 2 moles HCl in 2 L H
O?
2
2
A5.
What is the pH of 1 M HCl?
What is the [H+] of a solution of pH 7 ?
B
Second Homework:
B1.
How do you know if a strong acid is strong?
B2.
How do calculations differ if an acid is strong or weak?
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education