Question

In the fermentation of glucose (wine making), 750 mL of CO2 gas was produced at 37...

In the fermentation of glucose (wine making),

750 mL of CO2 gas was produced at 37 ∘C and 1.00 atm .


What is the final volume, in liters, of the gas when measured at 24 ∘C and 655 mmHg , when n is constant?

Homework Answers

Answer #1

First calcule mole of CO2 gas produced

Use ideal gas equation for calculation of mole of gas

Ideal gas equation

PV = nRT             where, P = atm pressure= 1.0 atm,

V = volume in Liter = 750 ml = 0.750 L

n = number of mole = ?

R = 0.08205L atm mol-1 K-1 =Proportionality constant = gas constant,

T = Temperature in K = 370C = 273.15+ 37 = 310.15 K

We can write ideal gas equation

n = PV/RT

Substitute the value

n = (1.0 X 0.750)/(0.08205 X 310.15) = 0.029472 mole

now calculte volume of gas at 240C and 655 mm Hg

We know that PV = nRT

V = nRT/P

n = 0.029472mole,

T = 240C = 24+273.15 = 297.15K,

P= 655 mmHg = 0.8615 atm,

R = 0.08205 L atm mol-1 K-1 ( R = gas constant)

V = ?

Substitute these value in above equation.

V = 0.029472 X 0.08205 X 297.15/0.8615 = 0.834 L

Final volue of CO2 gas = 0.834 L

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