Multiple Choice
What is the correct name for the acid with the formula HNO_3?
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3. Chemical Reactions
Naming Acids
Multiple Choice
Which of the following is the formula for the conjugate acid of dihydrogen phosphate?
A
H2PO4-
B
HPO4^{2-}
C
PO4^{3-}
D
H3PO4
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Verified step by step guidance1
Understand that a conjugate acid is formed when a base gains a proton (H\(\textsuperscript{+}\)).
Identify the given species: dihydrogen phosphate ion is H2PO4\(\textsuperscript{-}\).
To find its conjugate acid, add one proton (H\(\textsuperscript{+}\)) to H2PO4\(\textsuperscript{-}\).
Adding a proton to H2PO4\(\textsuperscript{-}\) increases the number of hydrogen atoms by one and reduces the negative charge by one, resulting in H3PO4.
Therefore, the formula for the conjugate acid of dihydrogen phosphate is H3PO4.
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