\(n_{C_6H_{12}O_6}=\dfrac{11,25}{180}=0,0625mol\)
\(n_{CO_2}=\dfrac{V}{22,4}=\dfrac{2,24}{22,4}=0,1mol\)
C6H12O6\(\rightarrow\)2C2H5OH+2CO2
\(n_{C_6H_{12}O_6\left(pu\right)}=\dfrac{1}{2}n_{CO_2}=\dfrac{1}{2}.0,1=0,05mol\)
H=\(\dfrac{0,05.100}{0,0625}=80\%\)
Đáp án C