Wednesday, March 16, 2011

Determining The Limiting Reactant and Percent Yield LAB

Dear Readers,
I know we haven't always had the best time together, but I'm willing to put a filter on it.
We can work through this together
  • We'll observe a double replacement reaction
  • We'll find the limiting and excess reactant together
  • We'll determine the theoretical mass of the precipitate 
  • And we'll compare the actual mass with the theoretical mass 
  • TOGETHER! WE CAN ACCOMPLISH THE OBJECTIVES OF THIS LAB!!

LET US BEGIN
  1. We obtain Na2Co3 solution and CaCl2 solution
  2. Mix the two together in a beaker and observe! 
  3. Set up a ring stand and funnel with folded filter paper
  4. We now swirl the beaker and slowly pour some into the paper funnel. We'll take this slowly,     allowing the solution to smoothly filter out.
  5. When we're finished filtering, remove the filter paper and allow it to dry.
  6. We will weigh the paper next time.
  7. With the power of grayskull (and the filter paper)we can find our excess and limiting reactant!

This is what we saw during the lab
1 Na2CO3(aq) + 1 CaCl2(aq) --> 2 NaCl(aq) + 1 CaCO3(s)
This is how we will find our percent yield

Percent Yield=   actual mass produced (grams)    x 100
           theoretical mass produced (grams)


AND that my readers, was lab 6D. Are we alright now? We can still be friends? I'm horrible with rejection. I'll see you next time..hopefully. I HAVE COOKIES.

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