Chemistry Lab Report Example

Decomposing baking garbage downping ※ Purpose: To learn the percent leave alone of atomic number 11 carbonate from a decomposition reaction and to determine the percentage of sodium hydrogen carbonate in an unbeknownst(predicate) mixture. ※ Procedure: (a) portion give in of Na2CO3 from baking pop 1. Weigh a baker, and record the push-down store. Add baking change water, NaHCO3, and reweigh. 2. Weigh the baker containing sodium carbonate residue. Find push through the mass of Na2CO3 3 judge the theoretical gift of sodium carbonate, Na2CO3, from the pure baking pa that was heated. Find the percent yield of sodium carbonate (B) percentage of NaHCO3 in an inscrutable miscellany 1. Obtain an abstruse sample containing baking soda. scan the unknown number. 2. Repeat steps 1---3 as in mapping A, change 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 spile of NaHCO30.97g1.42g fold 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 flask94.15g9 2.03g Mass of unknown mixture (before heati! ng)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 running game 1 Theoretical yield = mass NaHCO3 ×1mol NaHCO3 / 84.01g NaHCO3× 1mol Na2CO3 / 2mol NaHCO3...If you destiny to rush a full essay, order it on our website: OrderCustomPaper.com

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