[Image of the structural formula is not possible to display in text format. Please refer to a chemistry textbook or online resource for a visual representation.]
Explanation:
* Phthalate: This refers to the phthalate ion, which is derived from phthalic acid. It has a benzene ring with two carboxyl groups (-COOH) attached.
* Hydrogen: One of the carboxyl groups is protonated (has an extra hydrogen atom), forming a -COOH group.
* Potassium: The potassium ion (K+) balances the negative charge of the phthalate ion.
Therefore, the structural formula shows:
* A benzene ring with two carboxyl groups attached.
* One carboxyl group is protonated (-COOH).
* A potassium ion (K+) is associated with the phthalate ion.
Key points:
* KHP is a solid, white crystalline compound.
* It is a primary standard used in acid-base titrations.
* Its molecular formula is C8H5KO4.
* It has a molar mass of 204.22 g/mol.
