1000 Ch 11-Gas Laws-Intro x iscms/mod/ibis/view.php?id-5148102 ?, Gra /2018 11.5

Question

1000 Ch 11-Gas Laws-Intro x iscms/mod/ibis/view.php?id-5148102 ?, Gra /2018 11.55 PM 4 20.87100 3 413/2018 11:47 P -d Periodic Table -Print n 17 of 19 Calculator Mapof Sapling Learning Hydrogen produced from a hydrolysis reaction was collected over water and the following data was compiled. Tolal Volurme of H) calecled12 miL Temperature 270? 737 mmHg Vapor Pressure of water at 27.0 27.0 mmHg Calculate the moles of hydrogen gas produced by the reaction. mol H Hint G" Up & View Soulon Check Answer 0 Next 8 Exit

Explanation / Answer

Barometric pressure   = 737mmHg

vapor pressure of water at 270C   = 27mmHg

The pressure of H2 gas = Barometric pressure - vapor pressure of water at 270C

                                     = 737-27   = 710mmHg

                                      = 710/760   = 0.934atm

T   = 27+273 = 300K

V = 96.12ml   = 0.09612L

PV = nRT

n    = PV/RT

       = 0.934*0.09612/0.0821*300    = 0.003645moles

no of moles of H2 = 0.003645moles

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