Problem: The following reaction forms 15.1 g of Ag(s):What total volume of gas forms if it is collected over water at a temperature of 25 oC and a total pressure of 753 mm Hg ?

FREE Expert Solution

Dalton’s Law 


at 25°C, water has a vapor pressure of 23.78 mmHg


Ptotal=PGas 1+PGas 2+PGas 3...Ptotal=PO2+Pwater753 mmHg=PO2+23.78 mmHg

PH2=729.22 mm Hg

 

Balanced equation: 2 Ag2O(s) → 4 Ag(s) + O2(g)

  • Mole ratio: 4 moles Ag for every 1 mole O2

moles O2=15.1 g Ag×1 mol Ag107.9 g Ag×1 mol O24 mol Ag=0.0349 mol O2


Ideal gas equation:


PV= nRTV=nRTP

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Problem Details

The following reaction forms 15.1 g of Ag(s):


What total volume of gas forms if it is collected over water at a temperature of 25 oC and a total pressure of 753 mm Hg ?

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