Question

Question 5: Aqueous barium hydroxide reacts with aqueous phosphoric acid in a neutralization reaction, which also produces a precipitate. (3.5pts for a; 3pts each for b&c] a. Write a balanced equation (including states of matter) for this reaction including all reactants and products, b. If you react 25.0mL of 2.25M phosphoric acid, what mass (grams) of precipitate could be formed? c. If you react 25.0mL of 2.25M barium hydroxide, what mass (grams) of precipitate could be formed?

Answer 1

3 Balot & 2 H₂ Pou Ba, (Poud + 64₂0 (5) 6) sdume to Hypocu - 25m) = 25x103 concentration (Molarity) - 2.25 m. no. do ndes de the Poy - Molarity (m) xvolume (2) = 2.25x25x103 = 56.25x 103 moles - from the equation ist states that 2 moles de H₂Pou - produce & mole of precipitate & Bazpou), ) 56.25x10 moles - prodiece, 56.25 410² = 28.125x10 2 moles des precipitate – 28.125x10 moles. mass ols precipitate - moles x molarmass. 28. 125 x 108 x 602 - 16.93 g c) If some amount of Ba(OH) is added moles of Ba(OH)2 – 56.25 x 10 moles. - 3 moles of Baloth produce & mole of Precipitato

moles de Baz (Poul = 56.25x10 18.758103 moles. mass of Baz(PC) – Moles x nw. - 18.15 0.0² & 602 - 110 299