Weak Acid Problems

We learned about how to find a PH and also learned how to find the PH of a weak acid or base. It wasn't too difficult, it was just a lot of work.
This is how you do it:

Video

Acid lab day 2

We finished our titrations today. We got a pretty light color and a little darker of a pink. However, before that drop the solution was clear but afterwards it was a darker pink so we approximated the last number. That was the hardest part of the titration.

Acid Lab

Today we did a new lab. It was the acetic acid lab. This lab was probably my favorite lab of the year so far or one of my favorite lab of the year. We had to perform titration using KHP, NaOH, and vinegar. At first it was really hard to do since we had to get the solution to change to pink and it had to be ligjht pink. If we add too much base, it would turn dark pink and that was not what we wanted. We had to do this many times over many days and I did enjoy doing it most of the times. This day was just practice for the real lab that we do tomorrow.

Vitamin C Lab

Today we started a lab in class using different juices to determine the vitamin C content in the beverages. We tested pear, apple, v8, a standard, and others to determine this. My partner and I still have other tests to finish up. Then we will determine which of the beverages have the highest amount of vitamin c.

Unit Exam

After that first quiz results, I was worried about chemistry this quarter. However, I prepared for this test in excess and the snow day helped with the preparation. I was able to do a lot more practice problems and it helped me prepare for this test. I feel confident about it and hope I can get more tests where I am this confident about it.

Stoichiometry review

Stoichiometry is the a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data. We use one set of data to transfer information and find out how much is used of the other substance. This is important to know since this chapter uses it in some molarity problems.

Weekly quiz

We took a quiz at the beginning of the week and I thought it was pretty easy. But my scores did not represent that. I didn't do as well as I thought I would. It was over Molarity and I didn't get it all that well. I Understood the saturation graphs but the math and some of the other type of problems troubled me. I will study these topics more and get a better grade on the unit test. Here are some links to help with this chapter.
http://www.chemteam.info/Solutions/Molarity.html
http://www.chemteam.info/Solutions/Molarity-probs1-10.html
http://chemwiki.ucdavis.edu/Inorganic_Chemistry/Reactions_in_Aqueous_Solutions/Unique_Features_of_Aqueous_Solutions
http://www.gcsescience.com/m28.htm
http://www.sciencegeek.net/Chemistry/taters/Unit6SolutionConcentration.htm
http://www.chemteam.info/Solutions/Dilution.html