A 020 M Solution of the Weak Acid HA Has a a [H⁺¹]

question 57

Multiple Choice

A 0.20 M solution of the weak acid HA has a [H⁺¹] = 1.4 10^-4 M.The acid ionization constant,K_a,for this acid is

• A)9.8 10^-8
• B)1.8 10^-5
• C)2.0 10^-8
• D)7.0 10^-4

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Definitions:

Electrically Neutral

A state in which an object or system has an equal number of positive and negative charges, resulting in no net charge.

Protons

Positively charged subatomic particles found in the nucleus of an atom, determining the atomic number of an element.

Electrons

Subatomic particles with a negative charge, orbiting the nucleus of atoms and playing a key role in chemical reactions and electricity.

Proton Acceptor

A chemical entity that receives protons (hydrogen ions) in a chemical reaction, often measured in the context of acid-base chemistry.