Question

The student repeated the experiment using a higher concentration of acid. The same volume of acid and the same mass of magnesium ribbon were used. What volume of hydrogen gas would have been produced after 60 seconds?

Answer 1

53 cm³

Step-by-step explanation:

When the student used dilute sulfuric acid, the reaction was complete after 60 s, because no more hydrogen was formed in the next 10 s.

The reaction would go faster if the student used a more concentrated acid, but 53 cm³ of hydrogen is the most that would form.