Chemistry

posted by .

Do you know the carbon chain lengths for the different states of alkynes?

Eg alkanes having a carbon chain length of 1-4 are gases, 5-16 are liquids and 17+ are solids.

Are there similar rules for alkynes?

  • Chemistry -

    Not really. Ethyne and propyne have m.p. at -82o and -101 C respectively with boiling poing of -75 and -23 respectively. Therefore, both are gases. The m.p. of all the others are below -24 and the boiling points rise from 9 with 1-butyne, 40 for 1-pentyne, 72 for 1-hexyne, 100 for 1-heptyne, 126 for 1 octyne, etc, increasing as molar mass increases. The isomers (2-butyne at 27 C, 2-pentyne at 55, 2-hexyne at 84) start another increasing series.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. hydrocarbons

    hi I am learning about Hydrocarbons, and naming them is there any steps I shoul follow when naming them becuase I honeslty don't understand! thanks for your help!!!1 First of all you should know that rules govern the IUPAC system. …
  2. unsaturated!

    Alkenes and alkynes are unsaturated. This means?
  3. organic chemistry

    I need to draw the structure of 4-Hexenal. I understand that "hex" means it is a 6 carbon chain and the 4 tells me the aldehyde group ("al")is off the 4th carbon. My problem is how to draw the parent chain. I tried it with 6 carbons …
  4. Chemistry

    Difference between hydration and hydrogenation reactions?
  5. Chemistry please check

    1. Which of the following would occur as saturated hydrocarbons?
  6. chemistry

    What evidence suggests the carbon-carbon bonds in benzene are different from bonds in alkanes and alkenes?
  7. Biology

    Could someone please help me answer the following questions; 1. What unique property of carbon is responsible for the large number of organic compounds?
  8. chemistry URGENT...30 min left

    Gasoline is a mixture of hydrocarbons of various chain lengths, ranging from 5-carbon chains to 10-carbon chains. One of the hydrocarbons we often hear about is the 8-carbon chain, octane. Octane combusts with oxygen as given by the …
  9. Chemistry: Please check answers

    1. Which of the following compounds is an unsaturated hydrocarbon?
  10. Chemistry

    1. Which of the following compounds is an unsaturated hydrocarbon?

More Similar Questions