(3) 3 x 22.4 L (4) 4 X 22.4 L • 42....
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(3) 3 x 22.4 L (4) 4 X 22.4 L • 42. 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)?

NEET/Medical Exams
Chemistry
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Explanation: Millimoles of ( mathrm{H}^{+} ) produced ( =20 times 0.05=1 ) Millimoles of ( mathrm{OH}^{-} ) produced ( =30 times 0.1 times 2 ) ( =6 ) (because. Each Ba(OH) ( _{2} ) gives ( 2 mathrm{OH}^{-} ).) ( therefore ) Of ( mathrm{OH}^{-} ) remaining in solution ( =6-1=5 ) Total volume of solution ( =20+30=50 ) ( m L ) ( thereforeleft[mathrm{OH}^{-}right]=5 / 50=0.1 mathrm{M} )
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