Question

which of the following terms represents the presence of phosphoric acid in hydrogen peroxide?

a. positive catalyst
b. reactant
c. negative catalyst
d. radical

Answer 1

Answer:

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d answer is reactant

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Answer 2

Phosphoric acid is present in hydrogen peroxide as a negative catalyst. Option C is the correct answer.

• A catalyst is a compound that changes the pace of a chemical reaction without changing its chemical composition. Catalysts are divided into two categories:
• (a) Positive catalyst: Catalyst that speeds up the reaction rate.
• (b) Negative catalyst: A catalyst that slows down the process.

• The addition of H₃PO₄ to commercially available H₂O₂ solutions as a stabilizer to prevent H₂O₂ breakdown is widely recognized.
• Here, H₃PO₄ is the chemical formula for phosphoric acid, and H₂O₂ is the chemical formula for hydrogen peroxide.
• The highest quantity of H₂ (1.2 mol) is produced when 1 M H₃PO₄ is added, however, the activity diminishes as the amount of H₃PO₄ is increased.
• Phosphoric acid is a negative catalyst that reduces hydrogen peroxide breakdown.