pouring a liquid off without including the solid at the bottor the solid laying
ID: 550129 • Letter: P
Question
pouring a liquid off without including the solid at the bottor the solid laying in the bottom of a solution QUESTION When performing the analysis to determine which was the limiting reactant a student found that addition of BaCl2 2H20 to a test tubes resulted in a precipitate and addition of NagPO4-12H20 to the other test tube did not form a precipitate. Which sub the limiting reactant? NagPO4-12H20 BaC2-2H20 Ba3 (PO412 QUESTION 5 What is the minimum number of moles of NagPO4-12H20 that would be requried to react with 0 144 mol of BaC/2 2H20? Do not include units with your answer. Report your answer to three significant figures QUESTION A particular sample in this experiment had a total mass of 3 49 g It was found through the procedure that the mass of BaC2 2H20 was 0 66 g what is the percent mass of NayPO 4 12 H2in the sample? Report your answer to three significant figures and do not include the units Save Al A oe@ DOLL F10 F11 5 6 8Explanation / Answer
BaCl2.2H2O is limiting reactant
Limiting reactant is exhausted first and when you add more of it,it keeps the reaction going again till completely reacted or in excess
5 let's write balanced chemical equation first
2 Na3PO4.12H2O + 3 BaCl2.2H2O = Ba3(PO4)2 + 6 NaCl + 30 H2O
2 mol sodium phosphate needed to completely react with 3 mol barium chloride
0.144 mol Barium chloride will need = 2/3 x 0.144
= 0.096 mol Na3PO4.12H2O
Last question not clear
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.