A Titration of 200 $\times$ 10^-5,K_a2 = 3 $\times$ 10^-9

question 23

Multiple Choice

A titration of 200.0 mL of 1.00 M H₂A was done with 1.38 M NaOH.For the diprotic acid H₂A,K_a1 = 2.5 $\times$ 10^-5,K_a2 = 3.1 $\times$ 10^-9.Calculate the pH after 100.0 mL of 1.38 M NaOH have been added.

• A)9.05
• B)8.86
• C)5.14
• D)9.90
• E)4.95

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Definitions:

Composition

The combining of distinct parts or elements to form a whole, especially in mathematics where functions are combined.

Function

A mathematical relationship where each input has a single output, often expressed as f(x).

Domain

All the conceivable values that can be inputted into a function.

Composition

In mathematics, the act of applying one function to the result of another to produce a third function; it's the combining of two functions where the output of one becomes the input of the other.