3NaOH + H3PO4 ==> Na3PO4 + 3H2O
mols NaOH = grams/molar mass = ?
Using the coefficients in the balanced equation, convert mols NaOH to mols Na3PO4. That's ?mols NaOH x (1 mol Na3PO4/3 mols NaOH) = ? mols NaOH x 1/3 = ? mols Na3PO4.
Steps for solving stoichiometry problem.
1. Write and balance the equation.
2. Convert what you have to mols.
3. Using the coefficients in the balanced equation, convert mols of what you have to mols of what you want.
4. Convert mols of what you want to whatever unit you want; ie. if grams then g = mols x molar mass. If volume the mols x 22.4 L/mol
A solution containing 83.100 g of sodium hydroxide [molar mass = 40.0 g/mol] was neutralised using phosphoric acid.
Calculate the moles of sodium phosphate formed (assuming that the reaction goes to completion). Give your answer to three significant figures.
I'm not sure the steps required
1 answer
2 answers