Who cares about titration?

Why and how can titration be used to determine the concentration of anything?

Concentration is molarity. By carefully adding a substance with a known molarity and known volume to something with an unknown molarity and known volume, it is possible to figure out the Molarity of the the unknown with the following equation: (M1)(V1) = (M2)(V2). In order to know how much of the known to add, put phenolphthalein in the unknown, it turns colorless in acidic solutions and pink in basic solutions. The following picture shows the set up of titration. 

To determine the concentration of an antacid tablet composed of magnesium bicarbonate (which is a base) you have to use an acid such as Hydrochloric Acid. Now based on my understanding of Titration and a little help from my sources, follow the steps to titrate Magnesium bicarbonate.

1. Clean, rinse, and fill a buret with HCl solution. Record the molarity of the HCl and the initial HCl volume reading from the buret .

2.    Weigh the antacid tablet the and record the mass.

3.   Transfer it to a clean 250 mL Erlenmeyer flask.

4.   Add distilled water to the flask and swirl the flask to help dissolve the antacid. Make sure to dissolve it completely.

5.    Add 3 – 4 drops of phenolphthalein indicator to the flask, and titrate the base solution to a phenolphthalein endpoint. Record the final HCl volume (+0.02 mL). 

6.    Repeat this analysis on two other brands of antacid tablets.

http://www.chem.latech.edu/~deddy/chem104/104Antacid.htm

Write-Away Friday: French Toast

1. What tasks have you completed recently?  

This past Saturday ( I know I am writing this a bit late :/ anyways ) the opportunity presented itself to teach my six year old nephew, Jarom, to make French Toast. He loves French Toast. Every time I babysit and offer to make breakfast that is what he requests. So I thought I would teach him and was an awesome little chief. Coconut Banana French Toast recipe photo

2. What have you learned recently?

He made himself some and then was complaining because his brother kept stealing his food off of his plate. So after he finished his French Toast he decided to make some more. Hyrum, his brother, asked Jarom if he would make him some too. Jarom at first was still angry that he stole his french toast and said “NO!”. I asked him “Why won’t you make him some?” Jarom said, ” Because Hyrum’s a big fat Jerk!” I explained how we need to be nice even when people aren’t nice to us. In church we have rings with CTR on them which stands for Choose the Right. I asked Jarom ” Does it say Choose the Right when other people are nice to us?” He of course shook his head no. Then he made him some. So many people do things based on how other people treat them. They like someone because the other person likes them. Or they hate someone because the other person hates them. Or they are mean to someone because that person was mean first. Are we so much controlled by other people that our whole interaction with the world is based on what someone else does? I know in this case making some food for his brother would only help him better master making French Toast. If we would just choose the High Road how much could just doing that help our friendship, skill, or just out look and attitude about each other? I think that changing your attitude to do what you know is right regardless of the other person would make you someone who acts and is not acted upon.

A CTR ring is a common symbol of the Church. I...

3. What are you planning on doing next?

Going to School tomorrow and working really hard for two days so I can have the most relaxation time. I NEED time to regenerate desperately!!!!

Stress Worry Woman with Text on White

http://www.freecoconutrecipes.com/index.cfm/2010/6/11/coconut-banana-french-toast

http://www.girl-jitsu.com/2013/04/11/five-benefits-of-adequate-sleep/

http://mormonsoprano.com/2010/11/04/ctr-symbol-celebrates-40-years/

Cool Chemical Reactions

There is false advertisement on the “Top 10” list of chemical reactions because some of the “chemical reactions” are not actual chemical reactions. The first one that isn’t actually a chemical reaction is the Meissner  Effect. It isn’t a Chemical Reaction because is it caused by super cooling a magnet which is a physical change. The next one is the Super Absorbent Polymer. This is a characteristic of the material. It can retain large amounts before dissolving. After the Super Absorbent Polymer is the “chemical reaction” entitled Floating on Sulfur Hexafluoride. The ability of the foil to float is only due to physical properties and isn’t a result of a chemical reaction. The Super-fluid Helium next is not a Chemical reaction because it is a Physical reaction. It is only a change of State. And that is it for the “false” chemical reactions. The other reactions are chemical reactions because the reaction occurs on the molecular scale and is a change of Identity.
  • Sodium, Water, and Chlorine Gas
  • 8Na (s) + Cl2 (g) + 6H2O (l) —>2NaCl (s) + 6NaOH (aq) + 3H2 (g) + Heat and Light
  • Redox Reaction
  • Magnesium and Dry Ice
  • 2 Mg (s) + CO2 (g) —> 2 MgO (s) + C (g)
  • Single Replacement Reaction
  • Potassium Chlorate + Candy
  • 2KClO3 (aq) + C12H22O11 (s) + 9O2 (g) —>12CO2 (g)+ 11H2O (l) + 2KCl (s)
  • Combustion Reaction
  • Sodium Acetate and Water
  • NaC2H3O2 (s) + 3H2O —> NaC2H3O2 3H2O (s) + Heat
  • Synthesis
  • Thermite and Liquid Nitrogen
  • 2 Al (s) + Fe2O3 (s) —> Al2O3 (s) + 2Fe (s) + heat
  • Single Replacement Reaction
  • Briggs-Rauscher Reaction
  • IO3- + 2 H2O2 + CH2(CO2H)2 + H+ –> ICH(CO2H)2 + 2 O2 + 3 H2O
  • This is an Oscillating reaction and repeats a series of reactions including: single replacement, double replacement, fusion, and decomposition reactions.

Write-Away Friday: Run or Dye

1. What tasks have you completed recently?  

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This morning I ran a 5K in El Paso called Run or Dye with my two sisters, Hannah and Heidi, and my brother in law Sam. We were able to keep a good pace and we completed it in about half an hour including all the pictures and what not. At the very end it was pretty neat because there was a bunch of people at the end screaming “way to go” “good job” or just “Woohoo”. We ran down the rows and gave a lot of people high fives, it was pretty neat. I really had a lot of fun and I momentarily felt like a celebrity. And after that we all got in a big group and were dancing and shouting and music was playing and then on cue we all threw a hand full or more of dye in the air. It was crazy and mostly hard to breath but it looked cool and was a great experience.

2. What have you learned recently? 

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On Friday I was telling people I was going to a run or dye event the next day. It took some people awhile to realized I meant DYE in stead of DIE. They thought that I was just some super athletic person or something. This really taught me a lesson about perception and what people mean when they say something. A lot of times we compare ourselves to what people say about themselves and we think “wow they do this or that and I am not even close to doing it” while in reality things aren’t as hard as they seem or made out to be different then they really are. You can never truly know how it is for someone else because you are not them and you were not there. Therefore, don’t compare yourself to others because the person you compare yourself is based on your perception and isn’t how it is.  

3. What are you planning on doing next?

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Next I plan on doing tons of homework because there is a lot of information that I need to learn about history, the bones, Pre-Calculus, and a little bit this weekend in Chemistry. Also I plan on working on my Orchestra playing test.

Write-Away Friday: Net Ionic Equations

1. What tasks have you completed recently?  

Yesterday I did a small lab in Ms.Gardner’s Honors Chem class. We did multiple reactions with multiple chemicals to see which would react. Once we determined which ones reacted we used that info to write Net Ionic Eqns, which I did. There was 26 reactions out of a possibility of  66.

2. What have you learned recently? 

I learned that Na, NH3, K, and NO3 didn’t react and become a solid, so they make up the aqueous part in the reaction. I also learned there are 4 steps to writing a Net Ionic Equation.

1. Balance the Equation

2. Dissociate all strong Electrolytes

3. Cross out spectator Ions.

4. Write Eqn with species remaining.


3. What are you planning on doing next?

According to the Flipped notes on the Chemistry page I plan on learning Metathesis Reactions next.

http://www.123rf.com/photo_2887471_a-scientist-or-chemist-observes-chemical-reactions-to-substances-in-a-spot-plate–focus-to-pipette.html

Baby Bottle Lab

 

Picture 

Honestly I found this lab, the baby bottle lab, quite easy. I may have had some luck on my side, but my bottle went 600 the first time I did it. Continually after that result, I repeatably got 600 cm. In the beginning I knew that it would take more Vinegar to react because it wasn’t 100% Vinegar it was only 5%. Which means that there was less of that compound to react with within the total amount of vinegar. I did however try Katelyn bottle and used similar ratios to that of my bottle. In her bottle I was only able to go about 550 cm. This taught me a little about this experiment. I learned that the bottle and the lid need to be easily put together. Her bottle often had issues coming together and therefore a lot of baking soda was lost. Also the lid needs to be tight and hers wasn’t. So the bottle actually was slightly important even if you had a good combo of Baking Soda and Vinegar. But how did I come up with a good combo of Baking Soda and Vinegar? I think I was just lucky that it worked out the first time even though I sort of had the method about the vinegar and I thought that about half the bottle and a cap full would evenly be used up to react, but if I did this again I would try use conversions before the experiment to see what grams would get me the desired product without having much leftover because stoicheometric conversions let you figure out how much will react to the final product by using moles, grams and the Molecular weights.

http://virtualgardnerblogs.weebly.com/chemistry.html

http://maria-passtion.blogspot.com/

Write-Away Friday: Performing with Misty

1. What tasks have you completed recently?  

I had the opportunity of  performing with a group of local musicians and Misty Boyce.  She is truly a talented musician that performed with Sara Bareilles, Naked Brothers Band, and many musicians of that caliber.  It was such an honor to work with her, because as a student in high school it is not common to play with people who actually are renown musicians. It was interesting to see how pop musicians like her are not all that great at reading written music and symbols, but can just come up with a melody and play it on the spot.  At some points in the program I saw her improvising on stage. The audience probably couldn’t tell but between each rehearsal some solo parts continually changed, but it was amazing how each time it sounded great and I couldn’t decide which way I liked best. They were always equally fantastic. It was two performances that I had to play with her.The first was good, but the second one had a very different feeling from the audience and the musicians around me. I had the feeling of “we got this” that just made it fun and the confidence actually boosted by playing. 


2. What have you learned recently? 

Of course in order to play with Misty I had to learn the music. These past few months the Orchestra and I have been working tirelessly to tune our notes, but  also to learn the syncopated rhythm common in pop music. It took a lot of time but we pulled off a very successful concert. Oh and I also learned that famous people are real people too. I mean that seems obvious but its not until you know one that that becomes real to you  
3. What are you planning on doing next?

Next we have to learn the music for the Holiday concert. This time though it wont be as exciting for us as it will be for the eighth graders that will be eager to play with older “cool” kids. I think for this next concert I will focus on perfect pitches and a good bow technique in order to play my BEST!!!

http://lcps.k12.nm.us/2013/10/30/mayfield-orchestra-performs-oct-29-30/