how many grams of NaOh are needed to make 50 g of Na3PO4 according to the equation: 3NaOH+H3PO4=Na3PO4+3H2O
(i'm not sure where to even start for this!)
The procedure for working stoichiometry problems.
1. Write and balance the equation. You have that.
2. Convert whatinformation you have (you want 50 g Na3PO4) into mols. mols = grams/molar mass = ?
3. Using the coefficients in the balanced equation, convert mols Na3PO4 to mols NaOH. That's
?mols Na3PO4 x (3 mols NaOH/1 mol Na3PO4) = ?
4. Now convert mols NaOH to grams. g = mols x molar mass = ?
To determine the number of grams of NaOH needed to make 50 g of Na3PO4, we first need to find the molar mass of Na3PO4.
Step 1: Find the molar mass of Na3PO4
The molar mass of sodium phosphate (Na3PO4) can be calculated by adding up the individual molar masses of each element.
Na: (22.99 g/mol) x 3 = 68.97 g/mol
P: 30.97 g/mol
O: (16.00 g/mol) x 4 = 64.00 g/mol
Now, sum up the individual molar masses to find the molar mass of Na3PO4:
68.97 g/mol + 30.97 g/mol + 64.00 g/mol = 163.94 g/mol
Step 2: Use the balanced equation to calculate the amount of NaOH needed
According to the equation, 3 moles of NaOH are required to produce 1 mole of Na3PO4. This means that the ratio between NaOH and Na3PO4 is 3:1.
Step 3: Calculate the number of moles
To determine the number of moles of Na3PO4 in 50 g, divide the mass by the molar mass:
Number of moles of Na3PO4 = 50 g / 163.94 g/mol
Step 4: Apply the mole ratio from the balanced equation
Since the mole ratio between NaOH and Na3PO4 is 3:1, we can use the number of moles of Na3PO4 to calculate the moles of NaOH needed:
Number of moles of NaOH = (Number of moles of Na3PO4) x (3 moles of NaOH / 1 mole of Na3PO4)
Step 5: Convert moles to grams
Finally, multiply the number of moles of NaOH by its molar mass to get the mass in grams:
Mass of NaOH = (Number of moles of NaOH) x (Molar mass of NaOH)
By following these steps, you will be able to calculate the grams of NaOH needed to make 50 g of Na3PO4.