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Question

____ moles of nitric acid are required to convert 1 mol 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 D 20, phosphoric acid
1 mol of phosphorus (P4) requires 20 mol of concentrated nitric acid (HNO3) to produce 4 mol of phosphoric acid (H3PO4). The reaction is: P4+20HNO34H3PO4+20NO2+2H2O

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