How many mL of 0.0500 M phosphoric acid (H3PO4) are needed to titrate completely 50.0 mL of 0.150 M barium hydroxide (Ba(OH)2)) solution?

Answer 1

1. Write the equation and balance it.
2. moles Ba(OH)2 = M x L
3. Using the coefficients in the balanced equation, convert moles Ba(OH)2 to moles H3PO4.
4. M = moles/L. Substitute M and moles H3PO4 and solve for L.

Answer 2

The answer is 50.0 mL