Question

Is H3PO4 a weak or strong acid?

Answer 1

Answer:

Strong acids are 100% ionized in solution. Weak acids are only slightly ionized. Phosphoric acid is stronger than acetic acid, and so is ionized to a greater extent.

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Strong and Weak Acids and Acid Ionization Constant.

Acid

Weak Acids

H3PO4 (phosphoric acid) H2PO−4 (dihydrogen phosphate ion)

CH3COOH (acetic acid) CH3COO− (acetate ion

H3PO4 is a strong acid

Answer 2

Answer:

Strong acids are 100% ionized in solution. Weak acids are only slightly ionized. Phosphoric acid is stronger than acetic acid, and so is ionized to a greater extent.

...

Strong and Weak Acids and Acid Ionization Constant.