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


Ptotal=PGas 1+PGas 2+PGas 3...Ptotal=PO2+Pwater746 mmHg=PO2+50.3 mmHgPO2=746 mmHg-50.3 mmHgPO2=695.7 mmHg×1 atm760 mmHg

PO2=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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