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Question

2P + 5H2SO4(conc.) Δ−→ __________ + 2H2O + 5SO2

A
2H3PO4
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B
2H2PO3
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C
2H2SO4
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D
2HPO4
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Solution

The correct option is A 2H3PO4
Conc. sulphuric acid reacts with phosphorous to form phosphoric acid, water and sulphur dioxide gas.
2P+5H2SO4(conc)Δ2H3PO4+2H2O+5SO2

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