Potassium Hydrogen Phthalate Is Used as a Primary Standard in Finding

question 31

Multiple Choice

Potassium hydrogen phthalate is used as a primary standard in finding the concentration of a solution of sodium hydroxide by the reaction KHC₈H₄O₄ + NaOH → NaKC₈H₄O₄ + H₂O.What is the molarity of the base if 32.75 mL is required to titrate 1.732 g of the primary standard?

• A)0.5189 M
• B)0.2590 M
• C)1.732 M
• D)3.861 M
• E)3.275 M

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Definitions:

Reef-Building Coral

Marine invertebrates in the order Scleractinia that produce calcium carbonate skeletons, forming the structure of coral reefs.

Mutualism

refers to a symbiotic relationship between two different species where both species benefit from the interaction, enhancing each other's growth, survival, or reproduction.

Zooxanthellae

Symbiotic algae that live inside corals and other marine organisms, providing nutrients through photosynthesis, which is essential for reef building.

Chemical Protection

The use of chemical substances to deter predators, parasites, or pathogens.