# Problem: Consider the following reaction:2 NiO(s) → 2Ni(s) + O2(g)If O2 is collected over water at 40.0 oC and a total pressure of 746 mmHg , what volume of gas will be collected for the complete reaction of 24.79 g of NiO?

###### FREE Expert Solution

Dalton’s Law

at 40°C, water has a vapor pressure of 55.3 mmHg

${\mathbf{P}}_{{\mathbf{O}}_{\mathbf{2}}}\mathbf{=}$0.915 atm

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###### Problem Details

Consider the following reaction:
2 NiO(s) → 2Ni(s) + O2(g)

If O2 is collected over water at 40.0 oC and a total pressure of 746 mmHg , what volume of gas will be collected for the complete reaction of 24.79 g of NiO?

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