Final answer:
To determine the number of moles of Ca(OH)2 required to react with 1.36 mol of H3PO4, use the stoichiometry of the balanced equation.
Step-by-step explanation:
To determine the number of moles of Ca(OH)2 required to react with 1.36 mol of H3PO4, we can use the stoichiometry of the balanced equation. According to the equation 3Ca(OH)2 + 2H3PO4 -> Ca3(PO4)2 + 6H2O, we can see that 3 moles of Ca(OH)2 react with 2 moles of H3PO4 to produce 1 mole of Ca3(PO4)2. Therefore, if we have 1.36 mol of H3PO4, we can use the mole ratio to calculate the moles of Ca(OH)2.
(1.36 mol H3PO4) x (3 mol Ca(OH)2 / 2 mol H3PO4) = 2.04 mol Ca(OH)2.
So, 2.04 moles of Ca(OH)2 are required to react with 1.36 mol of H3PO4.