Question

Select the following statements that are true. Select all that apply.

a. Hydrocarbons contain only C and H atoms.
b. Names of organic compounds consist of a root for the longest chain, a prefix for any attached group, and a suffix for the type of compound.
c. Isomers are compounds with the same molecular formula but different properties.
d. Alkynes contain single bonds; alkenes triple bonds and alkanes double bonds.
e. The longer the carbon chain the lower the molar mass and the lower the intermolecular contact, the lower the dispersion forces.

Answer 1

The statements which are true among these are: (a),(b) and (c) because,

(a) The simplest organic compounds which contains only carbon and hydrogen atoms are called hydrocarbons.

(b) The IUPAC naming of organic compounds have some rules for the naming of compounds, which consists of

• Finding the longest chain present in the compound called parent chain.
• A prefix for any substituent attach to the parent chain.

And lastly a suffix for the type of bond that molecule have.

(c) Isomers are the compound which same same molecular formula but different arrangement of molecules, due to this different arrangement they have different physical and chemical properties.