When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are produced if 56 grams of P4 have reacted?
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When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4.How many grams of phosphine are produced if 56 grams of P4 have reacted?
When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4? How we can balanced it?
To calculate the number of grams of phosphine produced, we need to determine the stoichiometry of the reaction and then use the given mass of P4 to find the mass of phosphine.
The balanced chemical equation for the reaction is:
P4 + 5O2 → 4PH3 + 2H3PO4
From the equation, we can see that 1 mole of P4 reacts to produce 4 moles of PH3. Therefore, we need to convert the mass of P4 to moles, and then use the stoichiometric ratio to find the moles of PH3 produced. Finally, we can convert the moles of PH3 to grams.
Here are the steps to calculate the mass of phosphine produced:
Step 1: Convert the mass of P4 to moles.
To do this, we need the molar mass of P4. Phosphorus (P) has a molar mass of approximately 31 g/mol.
Given mass of P4 = 56 g
Molar mass of P4 = 4 × molar mass of P = 4 × 31 g/mol = 124 g/mol
Number of moles of P4 = Given mass / Molar mass = 56 g / 124 g/mol
Step 2: Calculate the moles of PH3 produced.
From the balanced equation, we know that 1 mole of P4 produces 4 moles of PH3.
Number of moles of PH3 = Number of moles of P4 × (4 moles of PH3 / 1 mole of P4)
Step 3: Convert the moles of PH3 to grams.
To do this, we need the molar mass of PH3. Phosphorus (P) has a molar mass of approximately 31 g/mol, and hydrogen (H) has a molar mass of approximately 1 g/mol.
Molar mass of PH3 = 1 × molar mass of P + 3 × molar mass of H = 1 × 31 g/mol + 3 × 1 g/mol = 34 g/mol
Mass of PH3 = Number of moles of PH3 × Molar mass of PH3
Now, you can follow these steps and perform the calculations to find the mass of phosphine produced.