Essays Tagged: "percent yield"

Lab report on a fischer esterfication

gnetic resonance (NMR) spectroscopy. It was found that 0.3963 grams hexyl acetate was formed with a percent yield of 33.2%. The product was confirmed using NMR, IR, and boiling point confirmation.Back ... 2H16) *1mol C6OH14 1 mol C6OH14(297.48g C8O2H16)1 mol C8O2H16The following is a calculation to find percent recovery:% recovery = weight of the pure sample * 100Weight of theoretical productThe follow ...

(3 pages) 84 0 0.0 Dec/2003

Subjects: Science Essays > Chemistry

Organic Synthesis of Aspirin Chemistry Formal Lab.

ystalline aspirin is synthesized and purified by recrystallization, although there is not a hundred percent yield due to sources of error.IntroductionAspirin is a medicine commonly found in households ... eld = # of moles of limiting reagent XOf aspirinMolecular weight of aspirin (Acetylsalicylic Acid)4.Percent actual Yield = (Actual yield / Theoretical Yield) X 100%ExperimentalChemicals Used:*Salicyli ...

(5 pages) 345 3 4.7 Apr/2004

Subjects: Science Essays

Percent Yield of a Precipitate

PurposeThe purpose of the experiment is to determine the percent yield of the precipitate; by performing double displacement reaction between solutions of tw ... , we can calculate the theoretical yield of barium sulfate. By this, it is possible to find out the percent yield of barium sulfate; if we found the experimental yield.The percent yield of barium sulf ... O3)2 1 mol BaSO4 233.4g BaSO41 mol Ba(NO3)21 mol BaSO4=2.67906...... g BaSO4To finally find out the percent yield of BaSO4; we will need to calculate the experimental yield of BaSO4. To do that we wil ...

(5 pages) 29 0 4.0 Apr/2004

Subjects: Science Essays > Chemistry

Lab Report: Determining Percent Yield in a Chemical Reaction

Purpose:To find out the percent yield of copper in the reaction between copper sulfate (CuSO4) and Iron (Fe).Materials:Balan ... 67.33 gMass of beaker plus copper 69.43 gActual yield of copper 2.1 gExpected yield of copper 2.54 gPercent yield of copper -17.32%Calculations:Actual yield of copper = 69.43 g - 67.33 g = 2.1 gPercen ... er = 69.43 g - 67.33 g = 2.1 gPercent yield of copper = 2.1 g Cu - 2.54 g Cu2.54 g CuConclusion:The percent yield of copper is -17.32%.

(1 pages) 37 1 2.5 Jan/2006

Subjects: Science Essays > Chemistry

Lab 6: Electrophilic Aromatic Substitution

ed (position at which nitro-group substitution takes place) by thin-layer chromatography (TLC), the percent yield and the melting point range.2)To synthesize 1,4-Di-t-butyl-2,5-dimethoxybenzene by Fri ... l-2,5-dimethoxybenzene by Friedel-Crafts Alkylation of 1,4-Dimethoxybenzene, and then determine the percent yield and melting point range.Procedure*Please refer to the lab handout 6 and Macroscale and ...

(8 pages) 34 0 4.0 Apr/2007

Subjects: Science Essays > Chemistry

Preparation and Recrystallisation of Aspirin

ed and dried in the oven. They are then transferred to a desiccator to cool. The expected yield and percentage yield of the recrystallised aspirin can be calculated after the crystals are weighed. Las ... ed is pure enough.From the experiment, the weight of dry recrystallised aspirin is 1.13 g while the percent yield is 36.29% yield. The temperature range of its melting point is 138.2ºC - 141.4&or ...

(2 pages) 34 0 1.0 Jun/2008

Subjects: Science Essays > Chemistry