Barium chloride dihydrate mol g Sodium phosphate dodecahydrate mol lo easm moi) Barium phosphate mol

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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To receive full credit, you must SHOW ALL OF YOUR WORK. Answers that do not
have complete work shown will be marked as incorrect.
HIC
Molar masses: (check these numbers with your TA before going on. If you have the
wrong masses, all your calculations will be wrong!!)
Barium chloride dihydrate
mol
ni zinstsse
Intansted
Sodium phosphate dodecahydrate
mol
lo easm mo)
Barium phosphate
mol
#乙
Unknown Number
eololM
emtoiote mo).
3.02
Amount of initial unknown sample and Observations on Limiting Regent
Mass of Unknown Sample
eterbyrisrloebob elen
Mass of Filter Paper
0.4
wwonnu lanlgivo Tuoy nl haq balosano
44.63
elle
Mass of Clean Watch Glass
Transcribed Image Text:To receive full credit, you must SHOW ALL OF YOUR WORK. Answers that do not have complete work shown will be marked as incorrect. HIC Molar masses: (check these numbers with your TA before going on. If you have the wrong masses, all your calculations will be wrong!!) Barium chloride dihydrate mol ni zinstsse Intansted Sodium phosphate dodecahydrate mol lo easm mo) Barium phosphate mol #乙 Unknown Number eololM emtoiote mo). 3.02 Amount of initial unknown sample and Observations on Limiting Regent Mass of Unknown Sample eterbyrisrloebob elen Mass of Filter Paper 0.4 wwonnu lanlgivo Tuoy nl haq balosano 44.63 elle Mass of Clean Watch Glass
Amount of dry precipitate obtained from the reaction
46.07 g
46.01
Mass of watch glass, filter paper, and dried precipitate - 1st weight
g
Mass of watch glass, filter paper, and dried precipitate - 2nd weight
viegen o
0.06 g
Difference between the dried masses (must be less than 0.1 g)
0.98
Mass of the dried precipitate (this is dried barium phosphate).
(Use 2nd weight and subtract out filter paper and watch glass)
g
Calculations:
ebholda muhsE
Determining the masses of reactants in your original unknown use stoichio me
Mibo
Moles of barium phosphate (from mass of dri
precipitate)
mol
Moles of barium chloride dihydrate reacted (from stoichiometry)
mol
Mass of barium chloride dihydrate reacted
g
Moles of sodium phosphate dodecahydrate reacted m02 nwoinu tst
(from stoichiometry)
mol
Mass of sodium phosphate dodechahydrate
lo seel
Determining the EXTRA unreacted part in your original unknown
eeslo doteW neelo
Total Mass of reacted salts
(add barium chloride mass and sodium phosphate mass together)
Omute
noqu enoiteveadO edul tee
Mass of unreacted salt
(original mass of unknown - total mass of reacted salts)
Determining the Percentages of each Reactant in your original unknown
Which reactant is the Limiting Reactant? (Write out the compound name)
odu le
Transcribed Image Text:Amount of dry precipitate obtained from the reaction 46.07 g 46.01 Mass of watch glass, filter paper, and dried precipitate - 1st weight g Mass of watch glass, filter paper, and dried precipitate - 2nd weight viegen o 0.06 g Difference between the dried masses (must be less than 0.1 g) 0.98 Mass of the dried precipitate (this is dried barium phosphate). (Use 2nd weight and subtract out filter paper and watch glass) g Calculations: ebholda muhsE Determining the masses of reactants in your original unknown use stoichio me Mibo Moles of barium phosphate (from mass of dri precipitate) mol Moles of barium chloride dihydrate reacted (from stoichiometry) mol Mass of barium chloride dihydrate reacted g Moles of sodium phosphate dodecahydrate reacted m02 nwoinu tst (from stoichiometry) mol Mass of sodium phosphate dodechahydrate lo seel Determining the EXTRA unreacted part in your original unknown eeslo doteW neelo Total Mass of reacted salts (add barium chloride mass and sodium phosphate mass together) Omute noqu enoiteveadO edul tee Mass of unreacted salt (original mass of unknown - total mass of reacted salts) Determining the Percentages of each Reactant in your original unknown Which reactant is the Limiting Reactant? (Write out the compound name) odu le
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