CHEMISTRY
JAMB 2001 - Question 18
Chemistry 2001 JAMB Past Questions - Question 18: What is the decrease in volume of air when pyrogallol is shaken with 30.00cm³ of air?
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
B
Explanation
Air contains 21% of oxygen and pyrogallol absorbs or removes oxygen from the air.therefore 21% of 30.00cm³ = 21/100 x 30/1= 6.3cm³
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