What is the balanced chemical equation for P+H2>PH3?

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2P+3H2>>> 2PH3

To write the balanced chemical equation for the reaction between phosphorus (P) and hydrogen gas (H2) forming phosphine (PH3), we need to make sure that the number of atoms on both sides of the equation is equal.

First, let's write the unbalanced equation:
P + H2 → PH3

To balance the equation, we start by counting the number of each type of atom on both sides of the equation. On the left side, we have one phosphorus atom (P) and two hydrogen atoms (H). On the right side, we have one phosphorus atom (P) and three hydrogen atoms (H).

To balance the hydrogen atoms, we can place a coefficient of 3 in front of H2:
P + 3H2 → PH3

After this adjustment, we have three hydrogen atoms on both sides of the equation.

Now, we need to balance the phosphorus atoms. We already have one phosphorus atom on each side, so the equation is already balanced.

The balanced chemical equation for the reaction between phosphorus and hydrogen gas to form phosphine is:
P + 3H2 → PH3