What is the [OH^(-)] in the final soluti...

What is the [`OH^(-)`] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 ml of 0.10 M `Ba(OH)_(2)`?

A

0.40 M

B

0.0050 M

C

0.12 M

D

0.10 M

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The correct Answer is:

D

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