Moles.. Barium Hydroxide.. Chemistry.. HELP?

Barium hydroxide dissolves as follows.

Ba(OH)2(s) → Ba2+(aq) + 2OH-(aq)

How many moles of Ba(OH)2 are required to make 1.0 L of solution in which the OH- concentration is 0.050 M?

(1) 0.025 (2) 0.050 (3) 0.10 (4) 2.0 (5) 0.15

2 Answers

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  • 1 decade ago
    Favorite Answer

    0.025 - the compound concentration is half the hydroxide concentration

  • 1 decade ago

    (1) 0.025

    1 mole of Ba(OH)2 gives 2 moles of OH-

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