QQuestionChemistry
QuestionChemistry
What is the conjugate base of HPO^4−?
A. H^3O+
B. PO^43−
C. H^3PO^4
D. OH−
E. HPO^42−
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Answer
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Step 1:Let's solve this step by step:
Step 2:: Understand the concept of conjugate base
- A conjugate base is formed when an acid loses a proton (H+) - The conjugate base has one less hydrogen atom than the original acid - The charge changes accordingly
Step 3:: Analyze the given acid HPO^4−
- HPO^4− is the hydrogen phosphate ion - It can potentially lose a proton to form its conjugate base
Step 4:: Determine the conjugate base
- When HPO^4− loses a proton (H+), it becomes PO^4³− - This means the conjugate base is PO^4³−
Step 5:: Check the given options
- Option A (H^3O+): Incorrect - Option B (PO^4³−): Correct ✓ - Option C (H^3PO4): Incorrect - Option D (OH−): Incorrect - Option E (HPO^4²−): Incorrect
Final Answer
PO^4³− Explanation: HPO4^{-} \rightarrow PO4^{3 -} + H^{+} The conjugate base is formed by removing a proton from the original acid, resulting in PO^4³−.
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