Home » Past Questions » Chemistry » 2H\(_2\) + O\(_2\) 2H\(_2\)OFrom the equationabove, calculate the volume of unre...

2H\(_2\) + O\(_2\) 2H\(_2\)OFrom the equationabove, calculate the volume of unre...

2H\(_2\) + O\(_2\) 2H\(_2\)O

From the equationabove, calculate the volume of unreacted oxygen gas if a mixture of 50cm\(^3\) of hydroden and 75cm\(^3\) of oxygen are involved

85cm\(^3\)

50cm\(^3\)

125cm\(^3\)

55cm\(^3\)

The correct answer is B.

Since 2 mol H\(_2\) reacted with 1 mol of O\(_2\)

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

Remainder oxygen = Supplied amount - Reacted amount → 75cm\(^3\) - 25cm\(^3\)

= 50cm\(^3\)

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