____ moles of nitric acid are required to convert 1mol of phosphorus to _____?
A
10, phosphine
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B
4, phosphoric acid
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C
48, phosphorus acid
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D
20, phosphoric acid
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Solution
The correct option is D20, phosphoric acid 1mol of phosphorus (P4) requires 20mol of concentrated nitric acid (HNO3) to produce 4mol of phosphoric acid (H3PO4). The reaction is: P4+20HNO3→4H3PO4+20NO2+2H2O