[Hoá 11] Help

T

the_wind_summer

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S

snowtree

[TEX] C_nH_(2n+2)O_a[/TEX]
pt [TEX] C_nH_(2n+2)O_a +(3n+1-a)/2O_2 \rightarrow nCO_2 +(n+1)H_2O [/TEX]
1 mol ........................3,5 moL
[TEX] \Leftrightarrow [/TEX] 3n-a=6 vì a=<n

[TEX] \Leftrightarrow [/TEX] a=3 ,n=3
[TEX] C_3H_5(OH)_3[/TEX] đáp án B
 
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