Assuming that Ba(OH)₂ is completely ionized in aqueous solution under the given conditions the concentration of H₃O⁺ ions in 0.005 M aqueous solution of Ba(OH)₂ at 298 K is __________ × 10⁻¹² mol L⁻¹. (nearest integer)
Assuming that Ba(OH)₂ is completely ionized in aqueous solution under the given conditions the concentration of H₃O⁺ ions in 0.005 M aqueous solution of Ba(OH)₂ at 298 K is __________ × 10⁻¹² mol L⁻¹. (nearest integer)
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1 Answer
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Ba (OH)? ? Ba? ² + 2 (OH)?
Initial: 0.005M, 0, 0
Final: 0, 0.005, 0.010
[OH? ] = 0.01 M = 10? ² M
Kw = [H? ] [OH? ]
[H? ] or [H? O? ] = Kw/ [OH? ] = 10? ¹? /10? ² = 10? ¹² M
∴ [H? O? ] = 1 × 10? ¹² M
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