Q4. Another student repeated the experiment using magnesium metal. How would the volume of the H₂ gas

collected change (increase/decrease/no change) if the following conditions were changed? (All other

conditions remain unchanged). For each condition, include a brief one sentence explanation of your answer.

Condition

a. A smaller mass of metal used.

b. The atmospheric pressure decreased.

a.

b.

Change in Volume of Hydrogen Gas?

(Increase / Decrease / No Change)

Brief Explanation of Your Answers:/nPartner:

Atmospheric Pressure: 759.1 mmHg

Room Temperature: 21.65 °C

Mass of

Magnesium

Buret

Reading

before

Reaction

Buret

Reading after

Reaction

1

0.0120 g

0.99 mL

13.62 mL

Trial

2

0.0130 g

0.75 mL

14.60 mL

3

0.0117 g

0.88 mL

16.58 mL