Which of these mole ratios is possible for this reaction? 4p 5o2 → 2p2o5
4: 5
2: 1
1: 2
5: 2

The answer is 4:5

Explanation:

First we must verify that the equation is balanced, for that, we write the equation:

4P + 5O2 = 2P2O5

It is the formation equation of phosphorus oxide V, it is a synthesis reaction. It is observed in the equation that 4 moles of phosphorus react with 5 moles of oxygen to form 2 moles of phosphorus oxide V, therefore there is a molar ratio between phosphorus and oxygen of 4 to 5 (4:5).

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