(16) A barium hydroxide solution is prepared by dissolving 2.72 g of Ba(OH)? in water to make 25.0 mL of solution. What is the concentration of the solution in units of molarity. C = n = amount of solute (mol) V- 2.725 of Bato12?• Imol Ba(OH)? C= . 0.0159mol Ba(OH)? 025L > 171.342 5 Bator)2 = 0.0159 mol Ba(OH)? = 0.635 M b) If 26.8 mL of the barium hydroxide solution was needed to neutralize a 2.04 mL aliquot of the perchloric acid solution, what is the concentration of the acid? Ba(OH)?(aq) + 2HCIO?(aq) ? Ba(CIO4)?(aq) + 2H?O(1)

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(16) A barium hydroxide solution is prepared by dissolving

2.72 g

of

Ba (OH)_{2}

in water to make

25.0 mL

of solution. What is the concentration of the solution in units of molarity.

C = \frac{0.0159 mol B _{2} ( OH ) _{2}}{.025 L} = 0.635 M

b) If

26.8 mL

of the barium hydroxide solution was needed tc neutralize a

2.04 mL

aliquot of the perchloric acid solution, what the concentration of the acid?

Ba (OH)_{2} (aq) + 2 HClO_{4} (aq) ? Ba (ClO_{4})_{2} (aq) + 2 H_{2} O (I)

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