Chemistry Lab Report Example

Decomposing baking jumpping ※ Purpose: To learn the percent pull issue of atomic number 11 carbonate from a decomposition reaction reaction and to determine the percentage of sodium hydrogen carbonate in an unbeknownst(predicate) mixture. ※ Procedure: (a) portion coming back of Na2CO3 from baking pop 1. Weigh a baker, and record the weed. Add baking change water, NaHCO3, and reweigh. 2. Weigh the baker containing sodium carbonate residue. Find out the mass of Na2CO3 3 judge the theoretical fall in of sodium carbonate, Na2CO3, from the pure baking pappa that was heated. Find the percent yield of sodium carbonate (B) percentage of NaHCO3 in an chartless form 1. Obtain an foreigner sample containing baking soda. scan the unknown number. 2. Repeat steps 1---3 as in mapping A, replace the unknown mixture for the pure baking soda. 3. solve the mass of baking soda,NaHCO3 , and find the percentage of baking soda in the unknown mixture. ※ Data and observations (a) Table 1: Percent yield of Na2CO3 from baking soda Percent yield of Na2CO3 from baking soda rivulet 1Trial 2 pickle of flask + NaHCO395.12 g93.45g plentifulness of flask94.15g92.03g agglomerate of NaHCO30.97g1.42g flock of flask + Na2CO395.01g93.12g Mass of Na2CO3 (actual yield)0.86g1.09g Mass of Na2CO3 (theoretial yield) 0.61g0.

90g % yield of Na2CO3140% cxx% (b) Table 2: Percent of baking soda in Unknown Percentage of NaHCO3 in an unknown mixture # CTrial 1Trial 2 Mass of flask + unknown mixture #C (before heating)95.81g94.85g Mass of flask94.15g92.03g Ma ss of unknown mixture (before heating)1.66g2! .82 g Mass of flask + residue (after heating)95.20g93.80g Mas of H2CO3 (H2O + CO2) (after heating)0.61g1.05g Mass of NaHCO3 in the unknown mixture1.65g2.84g % of NaHCO3 in the unknown mixture99.0%101% ※ Calculations For table 1: notional yield of Na2CO3 for foot race 1 Theoretical yield = mass NaHCO3 ×1mol NaHCO3 / 84.01g NaHCO3× 1mol Na2CO3 / 2mol NaHCO3...If you destiny to go far a full essay, order it on our website: OrderCustomPaper.com

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