Multiple Choice
Which of the following represents the correct equilibrium expression for the first dissociation of Malonic Acid (H2C3H2O4) in water?
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17. Acid and Base Equilibrium
Acids Introduction
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Which of the following is a stronger acid?
A
HBrO
B
HBr
Verified step by step guidance1
Identify the acids in question: HBrO and HBr.
Understand that the strength of an acid is determined by its ability to donate a proton (H⁺) and the stability of the conjugate base formed after donation.
Consider the molecular structure of each acid. HBrO is a hypobromous acid, where the hydrogen is bonded to an oxygen atom, which is in turn bonded to a bromine atom. HBr is a hydrogen halide, where the hydrogen is directly bonded to a bromine atom.
Evaluate the bond strength and stability of the conjugate bases. In HBr, the H-Br bond is weaker compared to the H-O bond in HBrO, making it easier for HBr to donate a proton. Additionally, the conjugate base Br⁻ is more stable than BrO⁻ due to the lack of additional electronegative atoms that can destabilize the negative charge.
Conclude that HBr is a stronger acid than HBrO because it more readily donates a proton and forms a more stable conjugate base.
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