7 NSC
Preparatory Examinations - September 201
QUESTION 4 (Start on a new page.)
The flow diagram below represents various organic reactions. Study the reactions
and answer the questions that follow.
PROPANE
II
HCI
H H H
H-C-C=C-H
1
H Н.
O-H
H
х
H
H-C-C-C-H
Η Η Η
4.1 State the reaction condition required for reaction I
4.2 Write down the formula of the catalyst used in reaction II
4.3 Propane reacts with excess oxygen. Write down a balanced equation for this
reaction using molecular formulae.
4.4 Use structural formulae a write a balanced equation for reaction II.
(1)
(1)
A structural isomer of the product of reaction I is reacted with butanoic
acid, to form an ester.
(3)
(3)
4.5
Write down the name of the catalyst used in this reaction ​

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation:

a electronegativity decreases beacuse the size of nucleus is bigger.