Organic Chemistry Answers

Use the following information to determine the enthalpy for the reaction shown below.

 CO₂(g) + 2SO₂(g) --> CS₂(l) + 3O₂(g)     ΔH^o = ?

C(graphite) + O₂(g) --> CO₂(g)            ΔH^o = −393.5 kJ

S(s) + O₂(g) --> SO₂(g)                        ΔH^o = −296.8 kJ

C(graphite) + 2S(s) --> CS₂(l)             ΔH^o = 87.9 kJ

What weight of strontium acetate containing 99% 

Sr(CH3COO)2 • ½H2O must be used as sample in an assay 

according to the general method for alkali salts of organic acids 

if, after treatment of the ash with 50 ml of 0.5162 N 

hydrochloric acid acid, it is desirable to consume 30 ml of 

0.4675 N sodium hydroxide in the back titration?

what are the structures and products that cyclodecane produce when it reacts with excess NBS and hv

     Explain, in terms of intermolecular forces, why ethane nitrile and hexane are not miscible.

Write IUPAC names of the products obtained by the ozonolysis of the following compounds:

 (i) Pent-2-ene 

 (ii) 3, 4-Dimethylhept-3-ene

With reasons, arrange the following: ( 4mks)

(i) In increasing order of basic strength: C6H5NH2, C6H5N(CH3)2, (C2H5)2 NH and CH3NH2.

(ii) In increasing order of boiling point: C2H5OH, (CH3)2NH, C2H5NH2

Write structures of the compounds whose IUPAC names are as follows: (4mks)

(i) 1- phenylpropan-2-ol

(ii) 2-Ethoxy-3-methylpentane 

(iii) 3-Cyclohexylpentan-3-ol 

(iv) 2-Methylpropan-2-amine

. For organic compound with molecular formula C4H8, write structural formulas and IUPAC names for 

all possible isomers having the double bond.

Explain the following; (4 marks)

i. The H’s in ethyne are considerably more acidic than those in ethane (Illustrate your point with 

chemical equations). 

ii. A cycloheptene (very unstable thougth) can be made but cycloheptyne has never been made.

I have to do a reaction with an alkene using CBr4 and RO-OR. Would the peroxide cleave first and then attach the CBr4. If that happens how would the Br attach to the alkene