How much bromoethane can be obtained from 4.48 liters of methane?

univerkov | May 7, 2021 | education

Given:
V (CH4) = 4.48 L
To find:
m (CH3Br) =?
Decision:
1) Let’s compose the equation of the chemical reaction, the volume of methane is known to us, and let the bromethane be x g.
CH4 + Br2 = CH3Br + HBr
2) Vm (CH4) = 22.4 L / mol
3) M (CH3Br) = 12 + 3 + 80 = 95 g / mol
4) 4.48 L: 22.4 L / mol = x g: 95 g / mol
x = (4.48 x 95): 22.4 = 19 g
Answer: m (CH3Br) = 19 g.

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