Chemistry "One Question of the Day" - Ethyl Acetate (CH3COOC2H5)

【Title】Ethyl acetate (ch3cooc2h5) is a substance with a special fragrance. In the following statement, the correct one is ( )

a. The mass fraction of the h element in ethyl acetate is the largest

b. The mass ratio of the three elements of carbon, hydrogen and oxygen in ethyl acetate is 2:4:1

c. Ethyl acetate is an oxide

d. Ethyl acetate is composed of three elements: carbon, hydrogen and oxygen

Only when you're done can you see the answer

Answer: d

【Analysis】

a. The mass ratio of carbon, hydrogen and oxygen in ethyl acetate is: (12×4) :(1×8) :(16×2) = 48:8:32 =6:1:4, then the mass fraction of carbon elements is the largest, so a is wrong;

b. The mass ratio of carbon, hydrogen and oxygen in ethyl acetate is (12×4) :(1×8) :(16×2) = 6:1:4, so b is wrong;

c, ethyl acetate is composed of three elements of carbon, hydrogen and oxygen, and does not belong to oxides, so c is wrong;

d, ethyl acetate is composed of three elements of carbon, hydrogen and oxygen, so d is correct.

Hence the choice: d.