Question

The general formula for any alkane molecule can be written as C₂H₂2 where n is the number of carbon atoms in amolecule. In words, this means that for however many carbons there are, there are twice as many hydrogens plustwo. For example, if n-3, then 2n+2 = 8, and the formula is C₂H₂.12) Use the general alkane formula to write the molecular formula for the first 12 alkanes. (6 points)One:Two:Three:Four:Five:Six:Seven:Eight:Nine:Ten:Eleven:Twelve:

Answer 1

In this question, we have to use the general alkane rule to write down the chemical formulas for each alkane. The rule is CnH2n+2 for any alkane:

One: C1H2*2+2 = C1H4, methane

Two: C2H2*2+2 = C2H6, ethane

Three: C3H3*2+2 = C3H8, propane

Four: C4H4*2+2 = C4H10, butane

Five: C5H5*2+2 = C5H12, pentane

Six: C6H6*2+2 = C6H14, hexane

Seven: C7H7*2+2 = C7H16, heptane

Eight: C8H8*2+2 = C8H18, octane

Nine: C9H9*2+2 = C9H20, nonane

Ten: C10H10*2+2 = C10H22, decane

Eleven: C11H11*2+2 = C11H24, undecane

Twelve: C12H12+2 = C12H26, dodecane