ALKANE

HOMOLOGOUS SERIES : ALKANE

GENERAL FORMULA : C_n H_2n+2

FUNCTIONAL GROUP : single covalent bond -C-C-

END (SUFFIX) : -ane

MEMBERS OF ALKANES

methane

ethane

propane

butane

pentane

hexane

heptane

octane

nonane

NAMING HYDROCARBON MOLECULES

STRUCTURAL FORMULA OF CARBON COMPOUND

STEP BY STEP:

STEP 1: CHECK the longest continuous carbon chain, STEM. ( Write the STEM name)

If Carbon, C 

C=1 : meth-

C=2 : eth-

C=3 : prop-

C=4 : but-

C=5 : pent-

C=6 : hex-

C=7 : hept-

C=8 : oct-

C=9 : nan

C=10 : dec

STEP 2 : IDENTIFY and INDICATE the position of functional group,ROOT.

(Numbering the Carbon Chain begin the nearest ending to functional group). 

Give position  (number) and ending name of functional group, root.

STEP 3 : IDENTIFY and INDICATE the position of alkyl group, BRANCH.
(State the position following the Numbering of Carbon Chain in STEP 2)

Numerical Problem Solving in Rate of Reaction

Calculation maximum gas collected:

Calculation

Any questions please leave your comment in space below.

Group Presentation : 5 Neptune 2011

Group Work : Download

8/2/2011 : Given the group assignment.

Group work rate of reaction

SAMPLE ANSWER

Question 1 :
(i) Use zinc powder in excess. More total surface area of zinc atom exposed for collisions. Frequency of collision between zinc atom and hydrogen ion were increased. Frequency of effective collision between zinc atom and hydrogen ion also increased. Rate of reaction higher.

(ii) Zn + H₂SO₄ → ZnSO₄ + H<sub>2

∴1  mol</sub> H₂SO₄ → 1 mol H₂

no of mole H₂SO₄= 50 (2) / 1000 = 0.1 mol

 _{∴0.1  mol} H₂SO₄ → 0.1 mol H₂

Volume of gas given off = 0.1 x 24 = 2.4 dm³

Reaction of zinc with hydrochloric acid

FACTOR AFFECTING OF RATE OF REACTION

Effect Of Temperature On Rate Of Reaction

Sodium Thiosulphate Experiement : Rate of Reaction