Question
A mixture of 1-heptyne, 2-heptyne, and 3-heptyne was hydrogenated in the presence of a platinum catalyst until hydrogen uptake ceased. If one assumes that the hydrogenation went to completion, how many distinct seven-carbon hydrocarbons were produced? 8 1 6 2 3 Which of the following statements about ethane, C_2H_4, is incorrect? The H-C-H bond angles are approximately 120 degree. All of the hydrogen atoms are in the same plane. The carbon atoms are sp^2 hybridize. The H-C-H bond angles are approximately 109.5 degree. There is a total of five sigma a bonds.
Explanation / Answer
Q15
if we are totally hydrogenating them, they all form heptane, therefore the answer is B =1
C7H16
Q16
H2C=CH2
a) is true, sp2 hbridiation
b) true, same planar
c) true, due to hybridization
d) false, those are not tetrahedrical
e) true
choose D