Index of hydrogen deficiency questions

Assignment: Index of hydrogen deficiency short answer questions

This page of questions can be marked as direct student access either for assigning as a test or for students to work on in their own time. If you do not wish to use student access, links to downloadable versions of the questions and, separately the worked answers, can be found at Printable versions of written tasks.

Alkanes have the general formula CnH(2n+2) and alkenes have the general formula CnH2n.
Explain why a compound with the formula C6H12 can be classed either as an alkene or as a type of alkane.

3 lines
Show model answer

 

 

Calculate the index of hydrogen deficiency for a compound with the molecular formula C6H6O.

5 lines
Show model answer

 

 

Explain why 1,2-dichloroethane and ethane both have an index of hydrogen deficiency of zero.

3 lines
Show model answer

 

 

Deduce the index of hydrogen deficiency of ethylamine, C2H5NH2.

3 lines
Show model answer

 

 

Deduce the index of hydrogen deficiency of α-carotene.

skeletal structure of α-carotene

(you may prefer to use the structure given in Section 35 of the data booklet which shows most of the carbon and hydrogen atoms)

5 lines
Show model answer

 

 

a) Draw two possible structural isomers for compounds with the molecular formula C2H6O.

(b) Discuss whether the index of hydrogen deficiency is of any use in distinguishing between the two structural isomers.

10 lines
Show model answer

 

 

(a) Calculate the index of hydrogen deficiency (IHD) of morphine from its  molecular formula, C17H19NO3

(b) Show how the IHD can be explained by the number of rings and the number of double bonds in its structure.

morphine

10 lines
Show model answer

 

 

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.