Question on: JAMB Chemistry - 2022

2H\(_2\) + O\(_2\) → 2H\(_2\)O

From the equation above, calculate the volume of unreacted oxygen gas if a mixture of 50cm\(^3\) of hydrogen and 75cm\(^3\) of oxygen is involved

A

85cm\(^3\)

B

50cm\(^3\)

C

125cm\(^3\)

D

55cm\(^3\)

Ask EduPadi AI for a detailed answer
Correct Option: B

From the given equation, 2 mol H\(_2\) reacted with 1 mol of O\(_2\)

50cm\(^3\) hydrogen reacted with 25cm\(^3\) oxygen

remainder oxygen = supplied amount - reacted amount 

=> 75cm\(^3\) - 25cm\(^3\)

= 50cm\(^3\)

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