The Preparation of Calcium Carbonate Lab Essay

Words: 927
Pages: 4
Open Document
11/17/2011
The Preparation of Calcium Carbonate
Purpose: To create chalk (calcium carbonate) and to find the percentage yield in order to see the amounts of anhydrous sodium carbonate and calcium chloride were used up. Also to see if there’s any alterations like mass differentials.
Objectives:
1. To introduce the concept of “limiting factor” in a chemical reaction 2. To practice a. Writing a balanced equation b. Determining the number of moles of each reactant and product c. Deciding which chemical is the limiting factor d. Predict theoretical yield e. Determine actual yield f. Use error discussion
Materials:
* 2 beakers * 2 watch glasses * Stirring rods * Filter …show more content…
Percentage yield= Experimental yield x 100 Theoretical yield = 3.01g x 100 3.64g = 82.7 %

4. The class average mean was 89.41 % which is fairly close to best possible yield of 98%. Many groups were close to this result with yields such as 93.87%, 92.50% and 90.00% and other groups were farther like 82.70 and 83.72.

5. Percent Error = 98% - 82.70% x 100 98 = 15.91%
My group received a 82.7% yield percentage comparing to the 98% at best there. There was a 15.91% error percentage, and so when comparing yields to yield it was an ok amount of a differential. This error may be because of earlier mention experimental errors. 6. The class data was 89.41% which is close to the best yield of 98%, the class yield was only 8.59% off of being accurate.

7. Yes, there is a expediential l difference between the answers to question 5 and 6. The percentage yield I got from my experiment is 6.71% less than the class average percentage yield, and the yield I got is 15.3% off the yield (98%) and the classes average is only 8.59% off. It seems that both averages are reasonable considering they
Show More

Related Documents: The Preparation of Calcium Carbonate Lab Essay

complexoemtric titration Essay

Complexometric Titration: Determination of Water Hardness or Calcium in a Calcium Supplement -Unknown #208- Abstract The experiment will explore complexometric titrations and use them to determine water hardness. Calcium chloride will be prepared and used in titration with EDTA using a buffer for a more exact end point and EBT to visually see the end point. Finally the process will be repeated with a sample of water to determine water hardness. The experiment will be considered successful if the…

Words 1018 - Pages 5

Coral Mass Lab

Acidity and the Effect on Coral Mass Composed by Abby LaRussa, Alice Chan, and Anna Chavolla-Ramirez. AP Environmental Science Ms. Susens Apr 29, 2024 Group Members: Alice Chan, Abby LaRussa, Anna Chavolla Date of Lab Completion: 4/29/2024. Acidity and the Effect on Coral Mass Background Ocean acidification refers to the reduction in pH of the ocean over an extended period of time. The reduction in pH is caused by a series of events starting from the increased emission and accumulation…

Words 1545 - Pages 7

Sexually Transmitted Diseases Essay

Science For Living Notes (Compiled) Table of Contents Unit 1 Measurement 5-10 Unit 2 Matter 11-48 Unit 3 Basic materials for maintaining life Air 49-54 Water 55-68 Food 69-71 Other biomolecules of life 72-76 Unit 4 Energy in the Community Electricity 77-78 Heat 78-81 Light 82-91 Sound 92 Simple Machines 93-99 Unit 5 The Physical Environment Weather and Climate 100-113 Soils 114-128…

Words 35677 - Pages 143

Essay about An Introduction to Hydrophonics and Controlled Environment Agriculture

Introduction to Hydroponics and Controlled Environment Agriculture by Patricia A. Rorabaugh, Ph.D. University of Arizona Controlled Environment Agriculture Center 1951 E. Roger Road Tucson, AZ 85719 Revised December, 2012 TABLE OF CONTENTS CHAPTER 1: Controlled Environment Agriculture and Hydroponics: Past, Present and Future The Plant How to grow greenhouse crops Plant Protection: Insects and Diseases Basic Principals of Hydroponics Transplant Production Pollination, Fertilization and Bee…

Words 40128 - Pages 161