Phosphorus (P4) burns in air to give phosphorus pentoxide. Write a balanced chem
ID: 481902 • Letter: P
Question
Phosphorus (P4) burns in air to give phosphorus pentoxide. Write a balanced chemical equation for the reaction. You do NOT need to include states. P_4 + 5O_2 rightarrow P_4 O_10 Click on the reaction arrow button to add a reaction arrow to your answer. This problem requires only a single arrow, pointed to the right. Use the left and rightarrow keys to move the cursor out of a superscript or subscript in the module. It is usually easiest to out all letters and numbers WITHOUT formatting first, then go back and highlight (using your mouse of shift left arrow or sift rightarrow ) numbers and click the subscript tool. You will also need to determine what element in air allows phosphorus to burn. Keep in mind that elemental phosphorus is P_4 and oxygen gas is diatomic, meaning it exists as O_2. Finally insure that the number of atoms of each species is the same on either side of the reaction arrow.Explanation / Answer
Balanced equation is
P4 + 5 O2 -----> 2 P2O5
The formula of diphosphorous pentoxide is P2O5
The number of atoms of P on lesft side of the arrow are four so keep 2 in front of P2O5 so that thee number of atoms of phosphorous on each side of arrow are same.