# 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

${\mathbit{P}}_{{\mathbf{H}}_{\mathbf{2}}}\mathbf{=}$729.22 mm Hg

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

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

0.0349 mol O2

Ideal gas equation:

###### 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 ?