Which of the following molecular formula corresponds to ethyl butanoate ester ?
(a) C5H10O2 (b) C6H12O2 (c) C7H14O2 (d) C8H18O2
(b) C6H12O2C_6H_{12}O_2C6H12O2
Ethyl butanoate ester has the molecular formula C6H12O2 (C2H5COOC3H7)C_6H_{12}O_2 ~(C_2H_5COOC_3H_7)C6H12O2 (C2H5COOC3H7).