Each of four test tubes contains a different concentration of HCl(aq) at 298 K. A 1.0-gram sample of iron filings is added to each test tube.In which test tube is the reaction occurring at thefas

Regents Chemistry Exam August 2025 Question 41

41 Each of four test tubes contains a different concentration of HCl(aq) at 298 K. A 1.0-gram sample of iron filings is added to each test tube.In which test tube is the reaction occurring at the fastest rate?

Solution:

Rate of reaction depends on the concentration of reactants. The higher the concentration, the faster is the rate. Tube 4 has the highest concentration of HCl. Choice 4 is the correct answer choice.

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