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: P4(s) + 50₂(g) 2P₂05 (8) In the second step, diphosphorus pentoxide and water react to form phosphoric acid (H₂PO4): P₂0,(g) + 3H₂O(1) 2 H₂PO4 (1) Suppose the yield of the first step is 66.% and the yield of the second step is 91.%. Calculate the mass of phosphorus required to make 10.0 kg of phosphoric acid. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits. - ->
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: P4(s) + 50₂(g) 2P₂05 (8) In the second step, diphosphorus pentoxide and water react to form phosphoric acid (H₂PO4): P₂0,(g) + 3H₂O(1) 2 H₂PO4 (1) Suppose the yield of the first step is 66.% and the yield of the second step is 91.%. Calculate the mass of phosphorus required to make 10.0 kg of phosphoric acid. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits. - ->
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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![**Reaction Sequence Stoichiometry**
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.
**Step 1: Formation of Diphosphorus Pentoxide**
\[
P_4(s) + 5O_2(g) \rightarrow 2P_2O_5(g)
\]
**Step 2: Formation of Phosphoric Acid**
\[
P_2O_5(g) + 3H_2O(l) \rightarrow 2H_3PO_4(l)
\]
Suppose the yield of the first step is 66.6% and the yield of the second step is 91.2%. Calculate the mass of phosphorus required to make 10.0 kg of phosphoric acid.
Be sure that your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
**Input Box**
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Transcribed Image Text:**Reaction Sequence Stoichiometry**
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.
**Step 1: Formation of Diphosphorus Pentoxide**
\[
P_4(s) + 5O_2(g) \rightarrow 2P_2O_5(g)
\]
**Step 2: Formation of Phosphoric Acid**
\[
P_2O_5(g) + 3H_2O(l) \rightarrow 2H_3PO_4(l)
\]
Suppose the yield of the first step is 66.6% and the yield of the second step is 91.2%. Calculate the mass of phosphorus required to make 10.0 kg of phosphoric acid.
Be sure that your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
**Input Box**
An input box for entering the calculated mass of phosphorus.
**Explanation Button**
A button labeled "Explanation" is available for more detailed insights.
**Check Button**
A button labeled "Check" is available to verify the answer.
**Additional Notes**
There are no graphs or diagrams associated with this text. The interactive element appears to be an input mechanism for students to enter their calculated answers.
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