Is the precision of your two trials within 5 %?. Support your answer with calculations 2.Volume of 0,100 M Na3PO4 solution used30 mL30ML3.Initial burette volume of CaCl2 solution.6 mL20.620.6 m L40.6 mL4.Final burette volume of CaCl2 solution20 mL20 mLVolume of unknown CaCl2 solution usedMass of filter paper.381 g356 g.453 g.383 9Mass of filter paper + Ca3(PO4)2 precipitate.072 9.027 9Mass of Ca3(PO4)2 precipitate recovered000232 mol0000 871 molMoles of Ca3(PO4)2 recovered000261 mol.000696 molMoles of CaCl2 consumed in reaction.0348 M,01305,013 05 MMolarity of unknown CaCl2 solution0239 M%3DAverage Value for Molarity of Unknown CaCl2 solution

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Is the precision of your two trials within 5 %?. Support your answer with calculations

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.44E

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Question

Is the precision of your two trials within 5 %?. Support your answer with calculations

2.
Volume of 0,100 M Na3PO4 solution used
30 mL
30ML
3.
Initial burette volume of CaCl2 solution
.6 mL
20.6
20.6 m L
40.6 mL
4.
Final burette volume of CaCl2 solution
20 mL
20 mL
Volume of unknown CaCl2 solution used
Mass of filter paper
.381 g
356 g
.453 g
.383 9
Mass of filter paper + Ca3(PO4)2 precipitate
.072 9
.027 9
Mass of Ca3(PO4)2 precipitate recovered
000232 mol
0000 871 mol
Moles of Ca3(PO4)2 recovered
000261 mol
.000696 mol
Moles of CaCl2 consumed in reaction
.0348 M
,01305
,013 05 M
Molarity of unknown CaCl2 solution
0239 M
%3D
Average Value for Molarity of Unknown CaCl2 solution

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