(10) Zhengzhou, Luoyang and Nanyang in Henan Province took the lead in making some cars adopt closed operation mode, and tried out a new type of automobile fuel-ethanol gasoline for vehicles.

(1) 1×5=5 points C 2 H 5 OH? C 5 H 12 CH 3 CH 2 CH 2 CH 2 CH 3

(2)(C 6 H 10 O 5) n (starch) +nH 2 O nC 6 H 12 O 6 (glucose) (2 points)

(3) carbon dioxide? H 2 O(2 points)

(4) It can effectively reduce the serious air pollution caused by automobile exhaust and improve the environment? ( 1)

(1) ethanol contains hydroxyl groups, so the structural formula is C 2 H 5 OH. According to the general formula of alkane cnh2n+2, the molecular formula of pentane is C 5 H 12. There are three isomers of pentane, namely, ch3ch2ch2ch3, CH 3 CH 2 CH(CH 3) 2 and C(CH 3) 4.

(2) Glucose is produced by starch hydrolysis, and the equation is (c6h10o5) n+nh2onc6h12o6.

(starch)? (glucose)

(3) According to the composition of ethanol, the products of complete combustion of ethanol are CO 2 and water.

(4) According to the combustion products of ethanol, ethanol gasoline is called environmental protection fuel because it can effectively reduce the serious air pollution caused by automobile exhaust and improve the environment.

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