Which acid has formula H2CO3?

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Study for the IMAT Chemistry Exam. Access flashcards and multiple choice questions; hints and explanations included for each question. Prepare effectively for your exam.

Multiple Choice

Which acid has formula H2CO3?

Explanation:
The formula H2CO3 corresponds to carbonic acid. This acid forms when carbon dioxide dissolves in water, giving CO2 + H2O ⇌ H2CO3, and it acts as a weak acid that can lose protons in steps to form HCO3− and then CO3^2−. The other acids have different formulas: acetic acid is CH3COOH, phosphoric acid is H3PO4, and nitric acid is HNO3, so none of them match H2CO3.

The formula H2CO3 corresponds to carbonic acid. This acid forms when carbon dioxide dissolves in water, giving CO2 + H2O ⇌ H2CO3, and it acts as a weak acid that can lose protons in steps to form HCO3− and then CO3^2−. The other acids have different formulas: acetic acid is CH3COOH, phosphoric acid is H3PO4, and nitric acid is HNO3, so none of them match H2CO3.

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