Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter3: Mass Relations In Chemistry; Stoichiometry
Section: Chapter Questions
Problem 52QAP: Write a balanced equation for the reaction between (a) dihydrogen sulfide and sulfur dioxide gases...
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![Phosphoric acid, a mild acid used among other things as a rust inhibitor, food additive, and etching agent for cavity repair by dentists, can be made from
elemental phosphorus in a two step process. In the first step, phosphorus and oxygen react to form diphosphorus pentoxide:
P,(s) + 50,(g)
2 P,0; (g)
In the second step, diphosphorus pentoxide and water react to form phosphoric acid (H,PO,):
P,0;(g) + 3H,0(1)
2 H;PO, (1)
Suppose the yield of the first step is 77.% and the yield of the second step is 67.%. Calculate the mass of phosphorus required to make 6.0 kg of phosphoric
acid.
Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F143a1ae3-8b1e-4dea-84b2-91c02432f97c%2Fc8007483-c3c8-4b15-9e02-1784b863c118%2Fff6zasv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Phosphoric acid, a mild acid used among other things as a rust inhibitor, food additive, and etching agent for cavity repair by dentists, can be made from
elemental phosphorus in a two step process. In the first step, phosphorus and oxygen react to form diphosphorus pentoxide:
P,(s) + 50,(g)
2 P,0; (g)
In the second step, diphosphorus pentoxide and water react to form phosphoric acid (H,PO,):
P,0;(g) + 3H,0(1)
2 H;PO, (1)
Suppose the yield of the first step is 77.% and the yield of the second step is 67.%. Calculate the mass of phosphorus required to make 6.0 kg of phosphoric
acid.
Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
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