I need help with Stoichiometry Mapping and solving using the "line bar" method
Cl2P4(s)+6Cl2(g) --> 4PCl3(g)
How many mL of PCl3 can be produced by the reaction of so g of Cl2(g)
I don't know the line bar method, at least by that name. I have used ICE charts and that may be the same thing.To find mL you need the density too.
First, the equation isn't balanced. It should be
Cl2P4(s) + 5Cl2(g) ==> 4PCl3(g)
Convert 50 g Cl2 to mols. mol = grams/molar mass = ?
Now convert mols Cl2 to mols of the product using the coefficients in the balanced equation.
mols Cl2 x (4 mol PCl3/5 mol Cl2) = ?
Then convert to g. g = moles x molar mass.
You use the density, not posted, to convert to mL. mL = mass/density.
To solve this problem using stoichiometry, we need to follow these steps:
Step 1: Write down the balanced chemical equation:
Cl2P4(s) + 6Cl2(g) → 4PCl3(g)
Step 2: Determine the given information:
We are given the amount of Cl2(g) in grams.
Step 3: Convert the given amount to moles:
To convert grams of a substance to moles, we need to use its molar mass. The molar mass of Cl2 is 70.90 g/mol (35.45 g/mol per Cl atom).
Let's say we have "x" grams of Cl2.
So, the number of moles of Cl2 can be calculated using:
moles of Cl2 = (mass of Cl2) / (molar mass of Cl2)
moles of Cl2 = x / 70.90 g/mol
Step 4: Determine the stoichiometric relationship:
By looking at the balanced chemical equation, we can see that the stoichiometric ratio between Cl2 and PCl3 is 6:4. This means that for every 6 moles of Cl2, we will produce 4 moles of PCl3.
Step 5: Calculate the moles of PCl3:
Using the stoichiometric ratio, we can calculate the moles of PCl3 produced:
moles of PCl3 = (moles of Cl2) * (moles of PCl3 / moles of Cl2)
moles of PCl3 = (x / 70.90 g/mol) * (4 moles PCl3 / 6 moles Cl2)
Step 6: Convert moles of PCl3 to volume in mL:
To convert moles of PCl3 to volume in mL, we need to use the molar volume. The molar volume is the volume occupied by one mole of any gas at standard temperature and pressure (STP), which is 22.4 L/mol or 22,400 mL/mol.
We can use this conversion factor:
volume of PCl3 (mL) = (moles of PCl3) * (22,400 mL/mol)
Now, you can substitute the value of "x" (grams of Cl2) into step 5 and calculate the moles of PCl3. Then, substitute the result into step 6 and calculate the volume of PCl3 in mL.