Sunday, February 5, 2012

Calculate the theoretical yield percentage if 525 L of methane are actually produced at NTP conditions?

Methane can be obtained from coal using a process called the gasification of coal. The global chemical equation for the reaction is as follows:



C + 2H2 -%26gt; CH4



a) If coal is made up of 44% pure carbon, by mass, calculate the maximum volume of methane which could be produced from 2.0 kg of coal at NTP conditions.

b) Calculate the theoretical yield percentage if 525 L of methane are actually produced at NTP conditions.Calculate the theoretical yield percentage if 525 L of methane are actually produced at NTP conditions?
mass carbon = 2000 g x 44 /100=880

the ratio between C and CH4 is 1 : 1

moles CH4 = 880

at NTP conditions T = 20 *C = 293 K and p = 1 atm

V = nRT/p = 880 x 0.08206 x 293 K/ 1 atm=2.12 x 10^4 L



% = 525 x 100/ 2.12 x 10^4 = 2.48

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