How many hydrogen atoms are present in a hydrocarbon chain of five carbon atoms with one double bond and the rest single bonds?

Question

Quizplus · Accepted Answer

The formula for a hydrocarbon chain with five carbon atoms and one double bond is C5H10. Since each carbon atom has the potential to form a maximum of four bonds (either single or double), we can determine the number of hydrogen atoms by subtracting the number of bonds already present in the molecule (5 carbon-carbon single bonds + 1 carbon-carbon double bond = 7) from the total number of bonding sites available on the carbon atoms (5 carbon atoms x 4 bonds per carbon = 20). Therefore, there are 20-7=13 sites for hydrogen. Each site requires one hydrogen atom, so there are 13 hydrogen atoms in this molecule. Therefore, the answer is C.

How Many Hydrogen Atoms Are Present in a Hydrocarbon Chain