含碳,氧,氢元素的下列有机物通式:A:Cn(H2O)m,B:(C2H3)n(H2O)m,C:(C2H)n(H2O)m,D:(CH)n(H2O)m,E:(C2O)n(H2O)m,F:(CO)n(H2O)m.(1)若充分燃烧某有机物,消耗氧气的体积与生成二氧化碳的以及之比为5:4(相同条件下),则该类有机物分子式的通式是上述各式中的哪个?
问题描述:
含碳,氧,氢元素的下列有机物通式:A:Cn(H2O)m,B:(C2H3)n(H2O)m,C:(C2H)n(H2O)m,D:(CH)n(H2O)m,
E:(C2O)n(H2O)m,F:(CO)n(H2O)m.
(1)若充分燃烧某有机物,消耗氧气的体积与生成二氧化碳的以及之比为5:4(相同条件下),则该类有机物分子式的通式是上述各式中的哪个?
答
(1)D,(2)C8H8O2 6
答
4(CH)n(H2O)m+5nO2=4nCO2+(2n+4m)H2O
答
D:(CH)n(H2O)m,
4(CH)n(H2O)m+5nO2=4nCO2+(2n+4m)H2O
答
Cn(H2O)m:(C2H3)nn(H2O)m,C2H)n(H2O