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Q. Assemble the alcohols (have the formula of C4H10) in the order of increasing reactivity with concentrated HCl.

Q. 25.0 mL of a HF solution of unknown concentration is titrated with 0.200 M NaOH. The pH in the titration flask is 3.00 after adding 20.0 mL of the base solution. Now calculate the concentration of the original hydrofluoric acid solution. [Ka(HF) = 7.1 × 10-4]

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