A 1334-ML Sample of a 0

question 146

Multiple Choice

A 133.4-mL sample of a 0.21 M solution of H₃PO₄ is titrated with 0.14 M NaOH. What volume of base must be added to reach the third equivalence point?

• A) 4.0 × 10² mL
• B) 2.0 × 10² mL
• C) 6.0 × 10² mL
• D) 2.7 × 10² mL
• E) 67 mL

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Definitions:

Teratogens

Agents, such as chemicals or viruses, that can cause harm to a developing fetus.

Embryo

The early developmental stage of an organism, in humans, this phase lasts from the second to the eighth week of pregnancy.

Fetus

A developing human from roughly eight weeks after conception to the moment of birth.

Inflammatory Response

The body's immune response to infection or injury, intended to eliminate the cause of damage and initiate healing.