PERCENT YIELD tells you the efficiency of a reaction tells you the efficiency of a reaction formula:...
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Transcript of PERCENT YIELD tells you the efficiency of a reaction tells you the efficiency of a reaction formula:...
![Page 1: PERCENT YIELD tells you the efficiency of a reaction tells you the efficiency of a reaction formula: formula: % yield = actual yield x 100 theoretical.](https://reader036.fdocuments.us/reader036/viewer/2022062322/5697c00b1a28abf838cc86f3/html5/thumbnails/1.jpg)
PERCENT YIELDPERCENT YIELD
tells you the efficiency of a reactiontells you the efficiency of a reaction
formula:formula:
% yield = % yield = actual yield actual yield x 100 x 100 theoretical yieldtheoretical yield
![Page 2: PERCENT YIELD tells you the efficiency of a reaction tells you the efficiency of a reaction formula: formula: % yield = actual yield x 100 theoretical.](https://reader036.fdocuments.us/reader036/viewer/2022062322/5697c00b1a28abf838cc86f3/html5/thumbnails/2.jpg)
PERCENT YIELDPERCENT YIELD
theoretical yield – amt of prod theoretical yield – amt of prod predictedpredicted to form based on balanced to form based on balanced equationequation
actual yield –actual yield – obtained by doing an experimentobtained by doing an experiment varies according to temp, pressure, varies according to temp, pressure,
purity of reactants, and side rxnspurity of reactants, and side rxns
![Page 3: PERCENT YIELD tells you the efficiency of a reaction tells you the efficiency of a reaction formula: formula: % yield = actual yield x 100 theoretical.](https://reader036.fdocuments.us/reader036/viewer/2022062322/5697c00b1a28abf838cc86f3/html5/thumbnails/3.jpg)
CALCULATE % YIELDCALCULATE % YIELDPotassium carbonate reacts with HCl: Potassium carbonate reacts with HCl: write the balanced equation.write the balanced equation.
KK22COCO3(aq)3(aq)+ 2HCl+ 2HCl(aq)(aq)→ 2KCl→ 2KCl(aq)(aq)+ H+ H22O + COO + CO2(g)2(g)
When 45.8 g of KWhen 45.8 g of K22COCO33 is added to an is added to an
excess of HCl, 46.3 g KCl is recovered.excess of HCl, 46.3 g KCl is recovered.
Calc. % yield.Calc. % yield.
![Page 4: PERCENT YIELD tells you the efficiency of a reaction tells you the efficiency of a reaction formula: formula: % yield = actual yield x 100 theoretical.](https://reader036.fdocuments.us/reader036/viewer/2022062322/5697c00b1a28abf838cc86f3/html5/thumbnails/4.jpg)
CALCULATE % YIELDCALCULATE % YIELDKK22COCO3(aq)3(aq)+ 2HCl+ 2HCl(aq)(aq)→ 2KCl→ 2KCl(aq)(aq)+ H+ H22O + COO + CO2(g)2(g)
45.8g K2CO3 x 1 mol K2CO3 x 2 mol KCl …
138.21g K2CO3 1 mol K2CO3
x 74.55g KCl = 49.4 g KCl 1 mol KCl
%yield = (46.3 g / 49.4 g) x 100 = 93.7%