A 0.35 g sample of Li(s) is placed in an Erlenmeyer flask containing 100 mL of water at 25°C. A ball — Kinetics Chemistry Question
Question
A 0.35 g sample of Li(s) is placed in an Erlenmeyer flask containing 100 mL of water at 25°C. A balloon is placed over the mouth of the flask to collect the hydrogen gas that is generated. After all of the Li(s) has reacted with H2O(l), the solution in the flask is added to a clean, dry buret and used to titrate an aqueous solution of a monoprotic acid. The pH curve for this titration is shown in the diagram below.
[VISUAL]
Which of the following changes will most likely increase the rate of reaction between Li(s) and water?
A.
Using 125 mL of water instead of 100 mL
B.
Using a 0.25 g sample of Li(s) instead of a 0.35 g sample
C.✓ Correct
Using a 0.35 g sample of Li(s) cut into small pieces
D.
Decreasing the water temperature before adding the Li(s)
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