What Is the Approximate PH at the Equivalence Point of a Weak

question 82

Multiple Choice

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 M NaOH? K_a = 6.76 × 10^-4 for HF.

• A)1.74
• B)5.75
• C)8.25
• D)12.26

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Definitions:

Palindromic Sequence

A sequence of DNA or RNA that is the same when read forwards or backwards.

DNA Sequence

The precise order of nucleotides within a DNA molecule, which determines the genetic information carried by that molecule.

Genomic Library

A collection of DNA fragments that represent the entire genome of an organism, stored in vectors and maintained in host cells for study.

Spliced

The process of removing introns and joining exons together in a pre-mRNA molecule to form a mature mRNA strand.